I wrote a long message with too much info, so here's the basic premise:
I have an equity (AAPL) in the portfolio of one account under 2 different names. Each has the same ticker (AAPL), but on one line it's called APPLE INC COM, and on the other line it's called APPLE INC.
I have the same equity in other accounts, all called AAPLE INC, so if I look at a consolidated view across all accounts and brokers, it shows up on 2 lines with the same ticker, but two slightly different names. This skews all kinds of data as each has their own slice in a pie chart, each has a different average cost, etc. I tried editing out "COM" from the offending line item via "edit security," but Quicken is not permitting it.