I’ll add that doing the gear upgrade clears out any non account-wide glyphs you had, as well, WITHOUT WARNING like the Quest Log wipeout will.
Did it on a Druid of mine, and it took away my Glyph of Stars, that I had for YEARS! So, had to re-purchase it.
Just wanted to remind us all about it, in case my thread about it (that I made on that Druid) goes unnoticed, but this thread doesn’t: