After running the MIGMODL utility to unload a custom map and then load it into the target repository, the resync job is not flagging the new column(s) and generating the Unload and Recreate DDL for the table in the target repository.
Only the map information is unloaded as part of the MIGMODL utility. The entity and dialog information is not carried over for user extensions that use CA entity types (<1000 and > 32000).
In the target repository access Quick Map for the user extension and select DETAILS.METAENT and populate this panel. Then do the same for DETAILS.DIALOG. Once filled out issue a PROCESS.SAVE to save the map. It is recommended to log out of the repository and log back in for changes to show.