Hi everyone i have been in thailand for years now doing visa runs ect ,now my passport is full ,i am in the uk now visiting family and to get a new passport ,on my return to thailand will i have a problem ,is my old passport connected to my new one at thai immigration where i intend to start again doing visa runs again  ,is this going to be ok  thanks everyone 

They will link your history of using your old passport with the new one the first time you use it for entry to the country. They be able to see all your entries, departures and etc using the old one.

The only history that is lost is visas issued by an embassy or consulate.

As Joe Say's, happened to me years ago when trying to enter on a new passport, had all the details of my old passport on the computer.