I understood your problem when I read your last post, so you described it well.
I love Master Fader, but the one screwy thing about it seems to be the system of saving snapshots and shows. Master Fader 4 in particular has given me a couple of different error messages (none of them show killers) when trying to store snapshots, in addition to what I view as the odd and counterintuitive way in which you're supposed to save. I don't get it, because everything else about the app is awesome. I've used it on literally hundreds of shows over the past few years, and it's great as far as mixing on an iPad goes.
I've been trying to replicate your problem tonight with no success. I started a new show, and saved a snapshot within that show. I powered the entire system down and loaded the show again, seeing if I would see a duplicate show. I didn't, so I saved yet another snapshot within that show, powered down again, and when I brought everything online again I still saw no duplicate.
Here's the deal, though. For the past year since we updated me and the other guys I share this gig with have been using the same show file every night and just creating different snapshots for each night. By now we have several dozen snapshots within the same show, which we'll call "thawntex club." Probably isn't the best way to organize our work, but whatever.
Lo and behold, when I check the offline show bank, there are about 15 files in there called thawntex club. I have no idea why there are so many files of the same name, but it seems like the same thing is happening with our system as with yours, that in the process of saving we are somehow getting duplicate show files (I didn't have time to check which snapshots were in each one).
In fact, I'm not even sure how to save a show. When you click on the show icon, the only options you get are name, image, duplicate, and export. Maybe that's why we've only been saving snapshots for all these different nights within one single show
. When I sync up it always brings up that show, at which point I either start fresh with our default snapshot, or revert back to a stored one.
When I save a scene (similar to a snapshot in Master Fader) on my Midas next door, I get a big red "not saved" notification, which prompts me to hit the save button to then save the show. I guess Master Fader automatically saves the show when you save a snapshot? But why the duplicates?
You don't even get any "save" buttons in Master Fader as far as I can see. When storing snapshots you have that stupid replace button, and it's dumb prompt to "replace this snapshot with current state?" How about just a save button and an overwrite scene prompt? It just sounds more sensible. Jeez.
Unless the Mackie people have designed some brilliant method of saving snapshots and shows that's just going over my head, I think it's retarded how they have it set up. I shouldn't have to write a short novel on the subject. It should be simple. My answer to you OP is to just deal with it and figure out your own workarounds, unless you manage get to the bottom of the issue, in which case I'd appreciate you explaining it to me.
At the end of the night though, if show was a success, and I didn't have to work any harder than I should have aside from a minor inconvenience or two, I really don't give a shit. Master Fader has done me right 99.9% of the time, so I can easily deal with the above issues.