I thought you might be interested in looking at If I have the closed beta through the insider program, do I have to pay for the GPP version?.
https://forums.bohemia.net/forums/topic/218543-if-i-have-the-closed-beta-through-the-insider-program-do-i-have-to-pay-for-the-gpp-version/?do=findComment&comment=3307311
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