Question on switching from Non-OA retirement extension to ED visa

Hi all. My husband is on a non-OA based on retirement that he obtained in his home country, Taiwan. Previously in Thailand he had a “research” visa (similar to ED visa) with a university in Bangkok, a paid fellowship. Once that ended, he got the non-OA. Now the university is considering issuing him a new, paid, research visa. Question: if he cancels his current OA & works under the university visa for 1 or 2 years, will he have any problems re-applying again for the OA (or O) in the future? We are in Bangkok.

Thanks for any advice!

Hi all. FYI, at Bangkok Immigration today, 4 April, they stayed open past normal hours to accommodate the large crowd. My husband went this morning for extension on his research visa, there were a lot of people, his ticket had a very high number. By 4:30pm, the normal closing time, there were still 100 people ahead of him. Long story short - they stayed open late. He got his visa done by 6:30pm, & they were still open. Can’t say if this will continue until Songkran, but just a heads up. And don't forget they're closed on Thursday, 6 April.

(My thought was that they wouldn’t just keep handing out tickets & make you sit there all day if they were unable to to complete them. Seems that was the case.)