[We] do not have to look after our khetdan as previously when facing the Burmese." For friendly countries, therefor, a prohibition on trespassing as the British prescribed was not welcome. It was probably seen as an unfriendly act since it was traditionally a step short of seizing the enemy.
Some even migrated from one side to the other from time to time. This has been true for all borders from the Pakchan River to northernmost Lanna.