I installed the latest Quicken Deluxe for Windows release (R57.26 HF2) and I downloaded investment activity in several accounts from different brokerages. One account had a purchase for a new ETF and I selected add a new security rather than use an existing symbol from the asset list. Worked fine. Then I noticed a few minutes later than in a different brokerage's account, which had no new activity, that the new security identification had been applied to an existing holding (replacing the existing holding's name and symbol). I noticed this change mainly because the price was vastly different for this new security than the one I owned, which vastly overstated the account value.
What is the best/easiest way to fix my problem, i.e. to change the security name and symbol back to the original one, hopefully without having the eliminate the new security?