Re: Have Questions About Interactive?
Atelier Interactive was designed to be able to be reopened with water or the unlocking formula, so I am not surprised that a glaze made with water reopened the paint. If you want to do multiple glazes, I'd suggest using "traditional" painting mediums like the Fast Medium, Universal Medium or Acrylic Glazing Liquid, for your glazes and/or first layers.
You do not "need" to use a medium with Interactive, if you like applying the paint as is. Generally, a damp brush, from a medium or water, is enough to get a nice, silky flow.