Anyway, the interesting part is the following:
It is interesting to note that Pa Kaa village lies outside the Tambon boundary (in neighbouring Pai district in fact), if the data provided by NNCO are correct. To date there exist no reliable maps from the Royal Survey Department indicating Tambon boundaries and work is in progress to produce this data, yet the provincial office gives the total area of Huai Poo Ling as 37,152 ha. As far as land use planning is concerned it is important to note that there are overlapping areas claimed by adjacent villages (marked in pink), which may lead to conflicting claims over its use.So while the contradicting maps I had run into were a different case, in the lower scales the boundaries are sometimes not yet completely defined. Maybe the announcements in the Royal Gazette I spotted last year and dubbed "Tambon area clarifications" are the result of such mapping work mentioned as being in progress in the paper.