How to find old Row/Column IDs after 'Save as New'


After a 'Save as New', all Row and Column IDs are changed.

I would like to know if I could somehow get the old IDs (maybe they are stored somewhere)?

I need them because I want to compare data of the old file with the new one (considering that there are changes done in the new one), based on IDs, and if they are not the same than this is not possible.