I have two kids who are here in Thailand with a one year visa (follow mother visa). I have My Husband (Foreigner), who needs to leave the country in order to come back with a Non-Immigrant visa. Is it OK for me to have the kids travel with us out of the country and still retain their one year visa status in Thailand? I have never done this before so we are asking for advice. Thank you! 
TLDR : Answer Summary
The children's one-year visa is likely an extension of stay rather than a full visa. When traveling out of Thailand, a re-entry permit is required for each child to retain their visa status upon return. The same applies to the mother.