Disappearing Class Achievements?

[3D House of Beef]

So after some considerable grinding to get various class achievements, I was down to only needing three. Today as I made yet another character to grind out another level 50 I see that I lost multiple class-related achievements that I already completed.

Thaumaturge for example, now shows up as needing to be completed. I still have the character that I achieved this with, first leveling to 50 with Medicine primary, then after getting that class achievement, putting my saved stat points into PSI and unlocking Mystic, for the PSI + Medicine class achievement. I still have Mystic, but my Thaumaturge achievement has disappeared.

Eyedivinecybermancy/wikia.com/wiki/classes

That link has the class names and what stats are required for the curious.

Perhaps there was some kind of cleanup that went through and only credited people for the current class that their characters are in? This can't be quite right, because the character I got Puppet Master with is now a Grey Master, but my Puppet Master achievement remains.

Leveling to 50 takes a long time. I can't bear to think I'd have to do these again due to an error.

Has this happened to anyone else?
Is there some way to fix it?

Thanks for any help or insight.

(Edit: Spelling)

[warmed_over]

Is there some way to fit it?

You could always create a ticket with Steam and I am sure if they decide to do it, it will be a simple fix for them.
https://support.steampowered.com/kb_article.php?ref=5578-QYDJ-3178

I just started playing, so I am not focused on them.

[Alien Mc Beal]

I can’t answer now, I need to have a look before.

[3D House of Beef]

Just point me in the right direction and I'm happy to take the next steps, are missing achievements an issue for Steam or for the game dev in question? I assume it's straightforward to see when achievements were gained, and to re-add missing ones, if one has access to that data.