How do you address the issue of a child that no longer pees in their pullup, only on the toilet, but that still poops themself?

I have a 2 year old dcg that is doing really awesome with potty training, but until recently was having uncontrollable messy poops because of a dairy intolerance. I finally convinced mom to go totally dairy free and she, for the first time ever, is having normal poops. So this is wonderful, but I don't know if this is still causing her to poop herself because she is so used to having loose poops.

My first instinct is to just be patient and ride it out as part of the potty training process. But I have been potty training one child after another for 2 years now and I really want to be done with it. I plan for this to be the last child I ever take that needs to be potty trained.