Anyone mixed Tough 2000 v1.1 with the new v2? I have like half a liter if v1.1 in the tank but I don’t want to have to throw it all out just to switch to v2.
I’ve never tried it but I think FL explicitly says they’re not compatible.
as @Paul_Cilino mentioned Tough 2000 V1.1 is not compatible with Tough 2000V2.
I am sharing the Formlabs article on this - Resin version history | Formlabs
Hope this helps. 
I’ve done it. It’s fine. Wouldn’t recommend it for anything mission critical though.
Yeah, that’s what I was afraid of.
But I really hate having to waste half a bottle of Tough2000 just to switch to v2…
I switched the V1.1 to V2. I asked here and got similar thoughts as above. I ran down the old tank to almost empty and it was fine for me to reprogram the tank and start printing in V2 settings.
I just bought an extra tank and mixer for the V2 and kept using the V1 untill it was ‘finished’. It saved the hassle when prints failed if it was because of one of the print parameters or mixing 2 different resins. In the end the parts are the things you need.