How to transfere old DATA mod allocations to updated game data file?

Since the update all the unit skin allocations I had setup in the dat file of my Data mod have been moved about or something, thus most unit/building skins I allocated no longer appears, no sprites appear at all.

(I am sure this will happen once more upon the release of the next DLC as well)

Can anyone aid me in how to copy / rectify my data mod to work with this new update?
(Appart from me having to individually re allocate each and every sprite ID to a unit.)

I made a copy of my mods dat file prior to the update, is it possible to use AGE, in order to import that data to the new Updated data set?

Like a copy/paste option?
A tutorial would be most appreciated.