I know that in some of the register updates, the GL file gets created before some of the rest of the updating is done. So while the update may have crapped out before finishing in AR, the GL portion was created just fine.
If you can restart the update from where it was at (assuming it says it was interrupted), there is a good chance it won't even create the GL files again. But even if it did, that's the option I'd go for - I'd far rather just make the small adjusting entry.