"Consider to install the trial version for QBD 2022 and upgrade your file. Do you see any difference?"

1) If you install the "trial QBD22" and upgrade your file, and later you determine you do not wish to continue with QBD22, can you downgrade your file and go back to the older version of QB?

2) What is the maximum file size, kb or mb, that QBD 20 and QBD22 can handle? Is the degradation in performance linear?

3) What is the documented performance gain (if any and define the characteristics in terms of start up, file saving, or whatever floats your boat)  when reducing the working QB file from 118,060Kb to 59,030?   If those kb sizes are have not been tested provide a value that has been.  And whom or who certified the gains, using what hardware and OS and provide their credentials.