This is for those who says transfer the VIP progress. I don't think it's really Primedice fault if your VIP progress there ends up being disregarded once they shutdown.
We all know that Primedice and Stake.com share the same owner, but in my opinion the two operate on completely separate paths.
They may have the same owner, but they're entirely different platforms.
It would definitely be better if your wagering progress on Primedice could be transferred to your Stake.com account, but I'm pretty sure that not something primedice or Stake.com would actually do.