This led to a protest at the border on the Cambodian side. It is probable that the 16 traders will be released and a deal struck for the traders association to stop importing fake goods.
The real IP story is that Thailand’s military government has been active against fake trademarked goods since they seized power in May. They set up a second Poipet military checkpoint to inspect goods entering Thailand away from the main border crossing. So this is in addition to customs checks. The military are getting active to enforce Thai laws. Their reasoning is that the military takeover was on the basis of widespread government corruption. Improving enforcement seems to be part of that.