Sorry but I am not familiar with the Krypton.
I do use the refence line in the Nocpix Mate to check repeatable alignment and it has its own X/Y calibration to align and mimic your day scope reticle POA on video playback.
Assuming your day scope is already zeroed to your preferred distance, the only way to check your Krypton is aligned correctly is by testing on a thermal target.
You may have to do some calibration adjustment on the Krypton, but after that and going by my experience with the Rusan Mar adapter it will be reliable to retain POI.
Hope that helps