I'll just share my personal experience with NAET..a few of my allergies came back as well (yeast,oils and aminos)..I thought and thought why and how this could be happening..finally struck me..I had been supplementing with whey, geranium and EAA+BCAA..
Now I'm not knocking the supps down..infact they are awesome..its just my body right now is incapable of processing anything in chemical form. I've been eating 10 whole eggs a day and my egg mix is still very strong. No sign of any allergy from it. Maybe get the egg mix cleared again and finish your basic 10/15. It really helps. Just my two cents.
Sometimes an allergy isnt cleared in one go fully so it builds up and comes back again. Maybe you are missing an emotion in the treatment ? Maybe some meridian needs to be added..etc..Give it another go..it's really wonderful.