I've [url=https://www.reddit.com/r/destiny2/comments/qx9jkl/i_lost_the_memory_fragments_i_have_stored_in_my/]had this issue since Season of the Splicer[/url]. I remember having the Memory Fragment in my vault and has since disappeared. There's [url=https://imgur.com/MkcNHSh]no new quest available to get the Memory Fragment and it's not in the Quest Archive[/url]. I have unlocked Stasis on all my characters, twice on my Titan after having this issue to see if I can get the quest. [url=https://imgur.com/a/BMK2yG4]My vault is showing an "Other" item in the Destiny Recipes website, that is invisible when viewed in DIM.[/url] My guess is that the Memory Fragment is still there, I just can't access it.