Well, I tried renaming my TF 2:1 preset "2minutes" but it worked as expected. I also tried it as "2 minutes" but that worked, too. BTW, the preset I'd named using a number at the beginning of the name aren't in matching banks, as is "12string" is in bank 4. I've got four presets that start with numbers.
Anyway, I'm at a loss as to why your TF isn't doing that. Have you tried reloading the V3 update? It might help and it's the only thing I can think of at the moment. In any case, I hope you get it figured out or that the next beta resolves the issue.