Hi Daisy, I did the same thing when I had to change yarns in the gusset and thought , "how am I going to get my second increase in there..." then I followed the instructions and when I got to yarn A again it was a lightbulb moment and I thought, "oh, yeah that makes sense". I just finished the gusset increases on my first mit and I am so enjoying the whole process! I am using a crazy zauberball and I am definitely having some color merging going on, but I stuck yarn A in a smaller bag so I don't forget which is which. We'll see how it turns out. I also had to go down in needle size (00 - oy! they might be too small but I am winging it - the mit seems to fit so far ). Thanks for the update!