2 part question -

1) - What is the best practice to clean up mistakes in QBDT (Enterprise 2022).  Is it best to use "Condense Data", or is there another option?  IF I use Condense Data, and some of that data is from a past year which also relates to current transactions, will that condensed data still be available, still show on reports, etc.?

2)  I have yet to update my 2022 QBDT to 2023.  I did try once and it indicated there was not enough room.

I'm assuming if/after I condense data, that issue will be moot?

Any insight would be appreciated.