@Hey *********
I would say that it depends on which immigration office.
In *Bangkok* I've been told that if I'm coming back to my permanent residence which is registered I do not need to file a new tm30. Same when Traveling and staying in Hotels and coming back.
Have ever lost year they asked me that I had to have my landlord file a new TM 30 "because of 5 year old one was too old". Lol
But from what I heard that in Pattaya you need to reregister every time after you being at another place with another tm30...
Så Ivan vi interpretation Seems to be up to each immigration office and you need to ask them.
And who knows maybe a Bangkok has changed their interpretation?
Basically you just do whatever your immigration ask you to do...