There are 19 Custom PR reports. Most fail with error 88 line 705 which has you check for enhancements -

Followed those steps to determine it is not the enhancement.  Problem is in connecting to old SOTAMAS90 KB 104971

Sage suggests rewriting the reports some of which are very complex and were rewritten for the 2018 upgrade.

I have unlinked the PR_EMPPIIWRK table re-added the table thru report manager and lhen get unspecified error which wants me to change the parameter to string values, but the selection is for a numeric field.