"Just forget it until the next time I see you."
All was forgotten until this spring when things started to happen.
He forgot about the call until the end of the week when the story broke.
I forgot all about this conversation until the night before we left.
In fact I had almost forgotten our talk, until the night of my arrest.
His work was almost forgotten until a movement to honor him came about during the 1980s.
Then I forgot about the incident until the next day.
Although the planning cycle is annual, you don't just make the plan then forget about it until next year.
Your guitar sounds great for a couple of hours, and then you forget about it - until the next time.
His wish, and the ownership of the building, were forgotten until 1967.