F1207 Same Assigned Work Order for PM's at Status 01

Recently migrated from A91 World to E1_9.2. FIrst PM Status Update runs (R12807) did not produce any results and after research found the Unique Key ID had to be adjusted. PM Update ran fine and PM's were generated. However, now upon reviewing the F1207 Maint File, there are hundreds of PMs at status 01 which have an Assigned WO value that is the same for all the PM's, as well as one or two at status 50. These 01's should be blank for the Assigned WO of course - only the Model WO should be in the record. So I