I believe this is an issue that i have run into in the past with account renaming. My fix was to update all of the old balance history entries with the new account information
See below for the link on how to do so, now this is again for sheets but I’m guessing that the process would be similar in excel.
Not sure if this tool/ work flow exists for excel either, but it should work if so
Also, a step by step guide of filtering and updating is available but i can’t seem to find it, but if it’s needed let me know and I’ll keep searching