Exactly what you said, LadyElf. The weird thing is it DID WORK before the new website changes. The resulting sort list I'm asking for is basically a list of ALL of my items grouped by vendor, vendors sorted alphabetically. The list would start with vendors whose names starts with 'A', followed by vendors whose name start with 'B', etc. My example image didn't get attached the other night, so here it now:

Zenzai, your suggestion results in a short list for only a single vendor, but my goal is to see ALL of my items. My Wishlist is admittedly huge- about 1300 items. That's more of a personal problem LOL! But on that note, I've started using the "LIKE" button more often than my Wishlist and clearing my Wishlist out.