I've been having this issue off and on for a while now (ever since the site upgrade that created the "live" cart expiration) with wish lists. Following the rule of <~20 items per list, I occasionally create a list of items to buy with my next order so that I can dump the cart and look at other pricing possibilities (mostly for figuring project costs.) However, it seems like every time I go back into my wish lists to restore them, they're gone. I believe my most recent one had lots of plain titanium for a project I had upcoming, and while it is my own fault I didn't write down my item count somewhere, it is slightly frustrating to have to recreate my wish lists over and over -- especially if they're just going to purge themselves anyway.
I can't find anything within the forums or the site to help me figure out if this is something I am overlooking (maybe you guys told us this already and I missed the memo? something like that).
Anyway, I guess I'm asking is this a bug? Or has this always been a Thing? Do wish lists only last a certain number of days? Do I need to set a calendar alert on my phone to re-create my wish lists every x number of days so that I don't lose them?