The LDN 0 in LDN_DATA should only apply to PRI DID routes not TIE Virtual Trunk routes, see NTP exert :
"Listed Directory number 0 must be defined for ISDN PRI
DID service.
The length of LDN0 determines the number of trailing
digits translated as the dialed DN on PRI DID routes. "
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Your Virtual Trunk route is set to TKTP = TIE i would pressume, so LDN0 should not apply.
I see your trying to do a block IDC change here.
I.e. converting 71235xxx to 71235 5.
Have you tried entering a single number in the IDC table e.g. 71235000 5000. In this case 5000 would be extn number on the local switch.
Also make sure you have IDC set to YES on the RDB for Virtual Trunks and that it is set to look at the correct IDC table number.
Post a print of Virtual Trunk RDB and IDC table to help.