Treat investment "Added" transaction similar to Buy for portfolio view

Drinkingbird

If I transfer an investment from one account to another (using removed and added transactions), all my performance data is lost.  The "added" transaction includes the date acquired and the cost basis, so why can't portfolio view utilize this information?  Even if the account is only a month old, if it has 5 years worth of data, there should at least be an option to show the performance prior to that account being opened....

I've setup a custom portfolio view with just securities, no accounts, and that helps, but the numbers still seem off, I think the removed/added are still throwing things off even there.