Big maybe. I've had a few of the documents open and I haven't seen anything specifically that would effectively allow me to remove the redactions. Now, I'm not the smartest, maybe someone else here can do just that.
I've taken a look at Schiff's released files versus the DNI released files. I was right, the DNI essentially printed the pages and scanned them back in, so the redactions on those are permanent. Not much we can do about that.
Now Schiff, though… we may be able to recover the redactions there, because when you tear them apart with Adobe Pro you can move the black 'redacted' parts around. There's no text behind them in the field (or rather above them, the black boxes are on a layer behind the text boxes), but maybe I'll take another look at these in Ghidra…
If this is a possibility, I'd vote on digging into Schiff's released files.