Before actually wandering away from this, can I get confirmation that you are NOT extracting fresh frozen material with ethanol?
While “live resin” can be made with your choice of solvent (and “live rosin“ sans solvent), the term is traditionally applied to hydrocarbon extraction on fresh frozen material.
If you are extracting wet material with ethanol, and reusing that solvent without drying it, this is your most likely source of water.
If the live resin was something you purchased, or made in house with hydrocarbons, then somebody needs to learn about Molecular sieve beads would be my best guess
Do your lab notes state if the “live resin” which buttered upon (accidental) “winterization” was bought up in fresh (200 proof) or reused solvent? This allows you to distinguish between wet solvent & wet extract…