Software upgrades routinely abandon old, inefficient, unnecessary and unpopular features all the time. Still there will be those who's work-flow depends in some way on those features and who will be inconvenienced. The option of keeping these features around leads to bloat in the code, slower performance, bloat in the interface and confusion to the user.

As already mentioned, there are free, third party products that will do the conversions automatically for you.

<self-appointed moderator>
Having said that, I will agree that the comments suggesting that if you don't like it to get a refund were indeed snarky. Criticism of a software product is important to the publisher and to the users. I say keep it coming.
</self-appointed moderator>

One final thought. Gagnonrich mentiones that vendors are still selling content with rsrs. I agree that if you buy something that has critical features that essentially no longer work, you should at least be given a warning.

 

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OS: Windows 10 64-bit, Poser: 10