Re Entry Permits

Recently I had my Non O visa retierment extension of stay transferred to my new passport. At that time I purchased a multiple re-entry permit. Then I was hired at a school here in Roi-Et. I went to Laos with the paperwork, changed the visa type to Non B, blah blah blah. The man at the embassy in Laos said I may have a problem with the multiple entry permit. Entered Thailand with Non B, which they cancel/mark as used. immediately. I still have the multiple entry stamp in my passport. It was never crossed out. It is dated during the time that my retirement visa was in place. This is the conondrum. Is the multiple entry visa still valid? At one time here Mario suggested that I may lose it.

There is no notation about it, other than the fact that if an immigration officer would closely examine the passport he/she would see that the multiple entry was issued when the retirement visa was valid, and that visa has now changed to non B with work permit, Thanks.