Hi Frank,
Yes, we’re familiar with ToolSet. WPSiteSync does synchronize all meta data associated with the Post being sync’d. So it should work with almost all data stored by ToolSet. Where you would run into trouble is if the metadata refers to other posts or to Images. This requires special processing in order to find the correct image, move it to your Target site and adjust the references (the different Post IDs) on the Target. This is the reason we’ve built special plugins to handle the data for Divi, BeaverBuilder and ACF: to handle these post/image references. So if your ToolSet metadata is not referring to any post IDs, it should work for you. Otherwise, it would require an add-on to fully support the data used by ToolSet.
We’ll add ToolSet to our roadmap and make sure that we handle the data correctly. Unfortunately, I cannot give you a date on when that would be ready.