Exit Saudi visit visa - Entry to Bahrain on visit visa Causeway

My parents are in Saudi on a visit visa.  Now they wish to come to Bahrain and will travel back to Home country.

With a valid visit visa to Bahrain , can they arrive via Causeway. That is final  exit from Saudi  and entry to Bahrain and Exit to home country.

Entry into Bahrain is not an issue.

However, the problems are usually from the Saudi side.  For example, on visit visas which are not marked for road travel as such; the first entry has to be by air and then subsequent ones by road.

I am not sure about the final exit i.e. whether the causeway Saudi immigration processes those.  Perhaps someone who has done the final exit via causeway can comment.