Shall I inform technical support?

[LuSnow]

I reply to my own post for an update: After a search with AI, I have the answer for at least one of my question.

/Quote
Why it is still there: The item is a marker, not a quest item that disappears. If you have already changed your retainer's job and the vocation is still in your inventory, it is safe to discard it or keep it for another retainer.
/Unquote

This input is confirmed by several posts I saw in Reddit. So it seems to mean that after the first change, it was normal that I had a copy in my inventory, re-usable for another retainer. At least I feel secured on that side.

Yet for the amount of ventures: I assume that I just didn't take care of the amount I really had. I see no other explanation.