I have searched everywhere I can think of and pretty much came up a blank on this.  I did find a fairly recent article that refers to Bangchak investing in foreign lithium mining and battery operations, but it must have been published before Bangchak started selling off its investment in LAC.  It does mention that they are expanding their investments in European battery manufacturing operations so maybe that is where Bangchak is redirecting the money that it had in LAC?  No clear answers.

Original article dated 13 November 2020... a lot has happened since then re: Bangchak and LAC... and how!

Bangchak pours big bucks into overseas lithium mines to make batteries for cellphones, EVs (nationthailand.com)