For others reading this thread, the new Fiscal Calendar data files are GLFISC'I and GLFISC'R. The older file is GLDATE'I.

If you want to convert Ledger data to 90A and there are GLFISC data files, this would cause the reported error in the earlier post.

Depending on when a conversion was halted, there may be additional GL90A files created that would have to be cleaned up.

And if someone does attempt to do a data conversion and it halts partway through - and you want to restore the data and try again - ensure that you first remove all of the GL data so that no partially converted files are left behind.