In Quicken Classic for Windows, has anyone encountered an issue where the Securities Comparison Mismatch report show a wrong share count in the Shares Reported column (i.e. leftmost column), which neither matches the Brokerage's (Schwab) actual count nor Quicken's transaction register share counts with the latter two being correct? I.e. the Quicken transaction register share total matches the brokerage share count, but somewhere Quicken appears to maintain a different share count (likely only updated during activity for that security), which the Securities Comparison Mismatch report uses.
I suspect something went wrong in Quicken's coding logic during a transaction download where a stock split for one security caused the resulting split new share count to also be added to another security with no activity during the transaction download with the split transaction in it.
Deleting the share split transaction does not reverse the problem. Adding a placeholder (share count need to be reduced, not added) does not work either. Nor does removing the shares as that changes the cost basis. I am reluctant running the 'File Validation' as I have 30 years of transaction history and who knows what may result. And running the 'Rebuild Investing Lots' says error could also change the cost basis.
Thus, the question: Does Quicken have some other sort of internal share count somewhere, that I can edit to correct this issue as restoring and catching up would be quite labor-intensive? And if so, how?