Gaurdians I need help

So I just recently installed Destiny 2 again if I memory serves me correct, I know I did Lunas calling memory quest but it’s still popping up on my map I clicked on it and nothing shows up, I went to to the tower to see if it’s on the abandoned quest and it’s not there, I checked my current quest and it’s not there at all, I even helped my friend with his cuz he barley started playing again and we did lunas spelunker and he got the memory sai mota but I didn’t ? So now I’m completely lost on what to do.