Here what I have from the CM logs
sysadm@MainCM> egrep -R "MG=#" 2016-122*
2016-1221-192638.log:20161222:043921181:20511591:capro(10532):MED:[ConnClosed: MG=#3 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.36 actIntf 2]
2016-1222-135558.log:20161222:150802879:20531114:capro(10532):MED:[mgRegister MG=#3 First attempt to return to main from LSP]
2016-1222-135558.log:20161222:233806118:20537586:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 2]
2016-1223-101633.log:20161223:113058524:20548153:capro(10532):MED:[mgRegister MG=#2 First attempt to return to main from LSP]
2016-1223-101633.log:20161223:113302802:20548191:capro(10532):MED:[mgRegister MG=#2 First attempt to return to main from LSP]
2016-1223-101633.log:20161223:113609282:20548294:capro(10532):MED:[mgRegister:re-registration by existing MG. Connection will be deleted and registration re-issued, MG=#2]
2016-1224-041315.log:20161224:110857160:20595608:capro(10532):MED:[ConnClosed: MG=#3 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.36 actIntf 2]
2016-1224-183716.log:20161224:210933161:20607694:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1224-183716.log:20161224:211219168:20607914:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-080059.log:20161225:105900020:20629627:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-114354.log:20161225:114421898:20630561:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-114354.log:20161225:121407383:20631359:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-114354.log:20161225:163843243:20636680:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-232109.log:20161226:034903423:20651959:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1225-232109.log:20161226:072056121:20655754:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
2016-1226-202422.log:20161226:212838094:20673925:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
sysadm@MainCM> egrep -R "MG=#" 2017-010*
2017-0101-020619.log:20170101:035240125:20887407:capro(10532):MED:[ConnClosed: MG=#3 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.36 actIntf 2]
2017-0102-145716.log:20170102:155357463:20944694:capro(10532):MED:[mgRegister MG=#3 First attempt to return to main from LSP]
2017-0103-101438.log:20170103:104309931:21035535:capro(10532):MED:[ConnClosed: MG=#2 disconnected: socket closure, moved to link-bounce state¦: near_ipaddr = 10.5.5.22, far_ipaddr = 10.6.5.29 actIntf 0]
sysadm@MainCM> egrep -i mgreg 2016-122*
2016-1222-135558.log:20161222:150802879:20531114:capro(10532):MED:[mgRegister MG=#3 First attempt to return to main from LSP]
2016-1222-135558.log:20161222:151047896:20531164:capro(10532):MED:[mgRegister:success MG#=3, MG_G450, Ipif=0x1, SerialNum=13TG25180305, HW Vintage=1, FW ver=34.5.0]
2016-1222-135558.log:20161222:151047896:20531165:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.36]
2016-1222-135558.log:20161222:151047896:20531166:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1222-135558.log:20161222:151047896:20531167:capro(10532):MED:[mgRegister:success MG Restart type=MG_RETURNS_FRM_LSP, action=LINK_UP_CNPR]
2016-1223-101633.log:20161223:113058524:20548153:capro(10532):MED:[mgRegister MG=#2 First attempt to return to main from LSP]
2016-1223-101633.log:20161223:113302802:20548191:capro(10532):MED:[mgRegister MG=#2 First attempt to return to main from LSP]
2016-1223-101633.log:20161223:113609282:20548294:capro(10532):MED:[mgRegister:re-registration by existing MG. Connection will be deleted and registration re-issued, MG=#2]
2016-1223-101633.log:20161223:113609818:20548295:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1223-101633.log:20161223:113609818:20548296:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1223-101633.log:20161223:113609818:20548297:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1223-101633.log:20161223:113609818:20548298:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_UP_CNPR]
2016-1224-183716.log:20161224:210951636:20607854:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1224-183716.log:20161224:210951637:20607855:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1224-183716.log:20161224:210951637:20607856:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1224-183716.log:20161224:210951637:20607857:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1224-183716.log:20161224:211332196:20607926:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1224-183716.log:20161224:211332196:20607927:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1224-183716.log:20161224:211332196:20607928:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1224-183716.log:20161224:211332196:20607929:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-080059.log:20161225:110003848:20629646:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-080059.log:20161225:110003848:20629647:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-080059.log:20161225:110003849:20629648:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-080059.log:20161225:110003849:20629649:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-114354.log:20161225:114543924:20630592:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-114354.log:20161225:114543924:20630593:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-114354.log:20161225:114543924:20630594:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-114354.log:20161225:114543924:20630595:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-114354.log:20161225:121447964:20631381:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-114354.log:20161225:121447964:20631382:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-114354.log:20161225:121447964:20631383:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-114354.log:20161225:121447964:20631384:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-114354.log:20161225:163928950:20636800:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-114354.log:20161225:163928950:20636801:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-114354.log:20161225:163928950:20636802:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-114354.log:20161225:163928950:20636803:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-183921.log:20161225:185829115:20639984:capro(10532):MED:[mgRegister MG=#4 First attempt to return to main from LSP]
2016-1225-232109.log:20161226:034944463:20651970:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-232109.log:20161226:034944463:20651971:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-232109.log:20161226:034944463:20651972:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-232109.log:20161226:034944463:20651973:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1225-232109.log:20161226:072149897:20655766:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1225-232109.log:20161226:072149897:20655767:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1225-232109.log:20161226:072149897:20655768:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1225-232109.log:20161226:072149897:20655769:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
2016-1226-202422.log:20161226:212939556:20673935:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2016-1226-202422.log:20161226:212939556:20673936:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2016-1226-202422.log:20161226:212939556:20673937:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2016-1226-202422.log:20161226:212939556:20673938:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_CNPR_LB]
sysadm@MainCM> egrep -i mgreg 2017-010*
2017-0102-145716.log:20170102:155357463:20944694:capro(10532):MED:[mgRegister MG=#3 First attempt to return to main from LSP]
2017-0102-145716.log:20170102:155657460:20944933:capro(10532):MED:[mgRegister:success MG#=3, MG_G450, Ipif=0x1, SerialNum=13TG25180305, HW Vintage=1, FW ver=34.5.0]
2017-0102-145716.log:20170102:155657460:20944934:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.36]
2017-0102-145716.log:20170102:155657460:20944935:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2017-0102-145716.log:20170102:155657460:20944936:capro(10532):MED:[mgRegister:success MG Restart type=MG_RETURNS_FRM_LSP, action=LINK_UP_CNPR]
2017-0103-101438.log:20170103:104510864:21036181:capro(10532):MED:[mgRegister:success MG#=2, MG_G450, Ipif=0x1, SerialNum=14TG20647119, HW Vintage=1, FW ver=34.5.1]
2017-0103-101438.log:20170103:104510864:21036182:capro(10532):MED:[mgRegister:IPV4addr 10.6.5.29]
2017-0103-101438.log:20170103:104510864:21036183:capro(10532):MED:[mgRegister:IPV6addr 0.0.0.0]
2017-0103-101438.log:20170103:104510864:21036184:capro(10532):MED:[mgRegister:success MG Restart type=MG_DISC_WARM_BOOT, action=LINK_UP_CNPR]