Problem with Artifact Knowledge

[Pari]

WoW Freakz link: https://www.wow-freakz.com/item_finder.php?item=144435&name=artifact-research-compendium-volumes-i-iv AND https://www.wow-freakz.com/item_finder.php?item=146745&name=artifact-research-notes

Bug description: I had 6 scrolls of artifact knowledge and one I bought for 1000 resources from headquarters with another pj that I climbed directly to 20 (I had level 15 in artifact knowledge) and I used the one that i climb to 20 directly, but suddenly the 6 scrolls that go up me d e 1 in one disappear, thought they were used together and be at lvl 26. However they simply disappeared or were spent (without me using them) and I did not raise the level I owed. In short: Use the scroll that goes up to the artifact knowledge lvl 20 and I was spending the 6 individual scrolls that go up from 1 to 1 and i did not climb.

I like to have the 6 scrolls returned to me as it cost me 48 hours to gather them and 3k of resources from headquarters.

Proof: When using the object that brought me to knowledge 20 directly, the other scrolls of artifact knowledge went away, so I don't know how I can prove it ...