It appears to be the way nulls are being handled.
I am calling the proc as
call myprocname parm1, null, null, null
returns 8 rows
call myprocname parm1, null, null, 208
returns 4 rows
call myprocname parm1, null, null, null
returns the same 4 rows as above, but if I use
call myprocname...