The contact for moving bees across state lines for SC is Brad Cavin with Clemson. You need to submit application for an entry bee permit with the inspection report from your state in order to bring bees into SC. To leave you should have your hives inspected and he will issue an inspection report. He is a super nice guy and is really trying to make commercial beekeepers aware of the correct process to move bees into or out of SC. His contact info is below if you have questions.
Stephen Bradley Cavin
State Apiary Inspector / Plant Pest Specialist
Department of Plant Industry
612 Chesnee Highway
Spartanburg, SC 29303
1-864-596-2993 ext.113 [email protected]