Haven't tried it yet. We have decided to use ACF for this project instead of MetaBox because ACF is better supported for some of the other plugins and functionality we need. I will be trying this method though to move from JetEngine to ACF. If it turns out to be relevant, I'll post my results here.
yeah. im on the same lines. going to try migrate from jetsmartfilters to wp gridbuilder. Hopefully can keep jetengine but if not i will migrate to meta instead. will try remember to keep this thread up to date too.