Delete Multiple Transactions in Investment Account

After getting bad advice from Wells Fargo when I recently modified Quicken to accommodate their on-line banking change I have a lot of duplicate transfers into my 401K investment account from my now deleted Wells account.
I have not been able to highlight and delete multiple items in that account.
I've tried CTRL+ and several other keys in conjunction with left and right mouse clicks (things that work on other non-investment accounts). I also tried highlighting multiple transactions in reports without success. I always simply highlight the transaction that I most recently clicked on.
Is there a method for highlighting/deleting multiple transactions in investment accounts?
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