So I was messing round with GD stash, trying to figure shit out, and accidentally clicked that button to “Add all blueprints”. Now, the game thinks I have found them all. (duh, right?!)
Anyway, I can’t figure out how to revert it and get back to the game where all it had were the blueprints I actually found. Any ideas?
I don’t know how to fix it, but you could post in the GD Stash thread and ask Mamba. 
Replace your current saves with the ones you backed up. If you have no backup, either remove the file with formulas or play as you play now.
Yes, restore the back up files you made prior to playing with a tool, or a mod. Yo u did, right? 
Having said that, you can look in your save file directory and see if there are multiple formula.gst (?) files. I think its formula.gst. Anyway, GDStash usually makes a backup prior to saving changes. The latest one is the one to restore by renaming it to formula.gst (?). Or the timestamp of when you were playing. This also assumes the tool makes a backup, but it does for other things it changes. I just can’t recall if it does or not.
Be sure to backup your save files first! 
I use this too rarely to know for sure, but I believe the tool first creates a backup, just like it does for the other files it changes.
Look for a formulas.t00 or so and rename that back to formulas.gst to restore your old file (or formulas.h00 for formulas.gsh). 00 is the most recent backup, 01 the one before it and so forth, go back in time until you have the one you want - chances are you only did this once, so there only is a 00 file
I ended up just wiping the formulas file and started over. I didn’t have any super amazing blueprints at the time anyway.
I did the same accidently, deleted the files, but there are still the blueprints in my game.
Any idea? I only deleted the formula files.
If you deleted formulas.gst and they still show up, maybe the game resorted to formulas.gst.bak. Try deleting both and see if that ‘fixes’ this.
I don’t have bak, or where too look? Only gst or bst.
Woah woah woah… is this some sort of mod? Grim dawn stash?? I have asked for a feature like this for a long time please don’t tell me it’s been under my nose. If it’s a mod not interested. But a checklist of BP’s would be very nice! (I know I’m missing at least two.)
This helped me, but this delete all ur stuff, so need to be do a backup save.