Conversion often does not do a good job on state and especially state depreciation. I would encourage you to start with the conversion year (2021). lf you can get the conversion year to match up exactly, go to Screen 3 (for individual) > miscellaneous and remove the check box mark near the bottom of that section for converted client (proforma use only).   Once that is done, you can do the proforma to next year

That being said, I would attempt to resolve your issue in the depreciation screen (22) Scroll down to Regular Depreciation  Prior Section 179 ... and make an adjusting entry in the right hand column for St. if diff (-1 = none)

I do think you will like need to do every asset, but using Ctrl and down arrow, you can jump down to the next asset at that entry point easily (Ctrl and up arrow also works)

The first year will really suck due to the inadequacy of the conversion, but going forward should be  good.