Hello @jtgostars,
Thank you for reaching out to the Community and telling us about this issue. I'm sorry to hear you're running into this problem. The Find tool is designed to look at all accounts and gives no option to narrow to just one account. One work around, from this previous discussion on the subject, is to go to Reports>Banking>Transaction and then customize the report with your search criteria (the account, date range, category, etc).
I hope this helps!
… still seems like the functionality for registers should be global and not just restricted to non-investment accounts
There is an internal reason by which non-investment accounts have 'registers' and investment accounts have 'transaction lists'. That distinction frequently seems to cause the features and attributes of one not to be directly transferrable to the other. That is not to disagree that that the find feature for investment account transaction lists could be more robust; only that it is an internally different set of programming than applies to the 'registers'.
I do think an Investment Transaction Report can be a pretty accessible alternative to Find.