Quiet Exports after rendering through ZGameEditor?

Hi guys (I hope this is the right sub forum to post this question in...)

I made a piece in FL, mixed/mastered it (mastered it pretty loud, if that makes any difference), bounced it as a .wav file - the file itself sounds as loud as I had mastered it (So everything's fine in that regard); however, when I import the mastered .wav file into a new FL session, and apply the ZGameEditor effect and do my business with it, the rendered audio-video is significantly quieter than the ZGameEditor session, the .wav, and the original mix file...any ideas to what could be causing this/ways I could go about remedying this?

But I digress, much love/thanks in advance for your guys' help!