This is interesting, but after 6 more months or a year, how would you want to show that you purchased the item before fab? is there a marker on the item?
Many of the items do not send a receipt to your email (mostly those that you claim for free, for example)
I hope this is a bug and will be fixed later. Even the Items that I have claimed here (free for personal use) does not allow me to upgrade license. I just saw in another thread that some items that people purchased for pro use, are also showing as personal license, and apparently is a bug.