You left out entirely the "seperate/different account type & number" here, but I'll guess that is still part of the equation.
I'm guessing the old Account was full of mutual funds, T.R.Price has "equivalent" ETFs (more or less) for each mutual fund, you or T.R.Price converted all the mutual funds into their "like kind" ETFs and put all these ETFs in a new account at T.R.Price, effectively zeroing out the old account.
This pattern, if it's correct, could have been easily mimicked in Quicken either by using either the "Mutual Fund Conversion" action or the "Corporate Acquisition (stock for stock)", then either continuing to use the old Account by disconnecting it from T.R. Price, entering the new account #, and then connecting the Account back to T.R. Price, or by using the Transfer Shares Between Accounts action to move all then new ETF securities to the new Account, at which point you'd disconnect the old Account and connect the new Account.
At this point if you're satisfied with the information in the new Account and want to keep the old Account around without doubling your net worth, then you could go into the old Account and do a "Remove" action for each old mutual fund or, using the Gear Wheel, do an "Update share balance" for each old mutual fund, specifying 0 shares, and Quicken will enter the Remove for you.
Some more detail about what really went on here would be helpful. My impression, based upon what you've written, is that some or all of the securities in the old account were liquidated, the money, (and maybe some securities?) was moved to a new account, maybe even with a different financial institution, and the money from the old account was used to buy I-Shares. Is that a fair (or close) representation of what happened?
What financial institution held the old account, what financial institution holds the new account?
If I'm somewhere in the ballpark about what went on here, then one comprehensive sequence of entries in Quicken would be:
Another approach would be to simply disconnect the old Account from downloading, change the Financial Institution and Account Number information to the new(?) Financial Institution and Account Number, and then connect the Account for downloading.
There are other approaches you could take too, depending on what you accomplish. If you don't care retaining any detail level information about the old Account and simply want that Account to "go away", to be replaced in effect by the new Account and new securities, that can be done too.