No, that would fall under normal daily "altering". I'm specifically referring to using the "Edit->Find and replace ingredients" functionality (ETA: Ingredient Editor is fine). I haven't pinned down exactly how many need to be done or whatnot, but that's where I remember frequent crashing happening when I was using that feature extensively when first starting out with JC. I also remember it happening after doing a one or two-off of using that feature and then returning to normal activities - which is what reminded me that I should save-exit-restart after using it, before returning to normal activities. As I say, I don't use that feature often anymore, so my memory is quite fuzzy except for the relatively recent time of needing it for a one/two-off. Since my ship is coming in pretty soon, I'm readying some orders currently totaling several thousands of dollars of flavorings ( ) - likely for when the respective sites next offer a site-wide 15-20% off. So I probably WILL never want to mix the same recipe twice. I don't do that often as-is, but likely more so after the new flavor shipments come in. I already have so many exploratories going right now, that I'm down to 4ml testers for most initial experiments - thinking about 2 or 3 next. I just wish I knew where to find good quality half-ml glass syringes for finer gradations - smallest I have are 1ml ones. I do already have 1/2 in and 1 inch SS dispensing tips in 24 and 27 gauge, to reduce the amount in the tips. At such small quantities, the amounts stored within my normal 1-1/2 inch 18-gauge tips become too disproportionate. Though I'm certainly not at all looking forward to having to transfer all those to 1/4/16 ounce amber glass bottles with polycone caps that I'll be ordering for them. <sigh> Such is the life of a flavor junkie. Who said vaping is cheaper than smoking? Ehh.. At least those flavorings will last many many years (perhaps decades??), since they'll be properly stored. At $7 per pack of cancer-stinkies, I think I calculated it would be ~$2500 or so a year. ETA: And by "modify-existing", I'm referring to "tools->Modify existing recipe" - a massively powerful tool for exploratories.