From a press release from the Bank of Thailand:
The Thai baht has been under pressure due to imbalanced capital flows in the current environment of highly uncertain and volatile external conditions, the Ministry of Finance (MOF) and the Bank of Thailand (BOT) decided to relax regulations to facilitate capital outflows to help promote capital flow balance and lessen pressure on the baht. Such relaxations include allowing exporters to keep foreign currency proceeds overseas, allowing retail investors to invest in foreign securities without going through a Thai intermediary institution and allowing businesses and individuals to transfer funds abroad more freely (Bank of Thailand, 2019).
Read the full press release here