Sharing my experience around ED visa - Extension of Stay cancellation
I didn’t cancel my ED visa - Extension of Stay (one year language program at CMU) and I had multiple entry. I left Thailand with valid ED visa extension of stay , applied for the DTV visa in Cambodia. I got the DTV, then came back to Thailand. The immigration officer at the BKK ( Suvarnabhumi Airport) asked me if I was going in with DTV or ED. I said DTV and she stamped the DTV entry date. Then I went to CMU to request my cancellation letter, waited for about a week. I just canceled my ED - Extension of Stay at CM immigration with no issue.
Hope it helps. 😊