I recently learned something that would have helped me just a few weeks ago. I knew that a Record Create element returned the record ID into a specified variable, but I didn’t know that a Fast Create element also returned record ID’s.
Oh, but it’s true! The FastCreate element puts record IDs into your sObject, both singular sObjects and sObject collections.
Not knowing this I used a Fast Create to save a collection of records, then used up another SOQL to lookup those records so I could get their ID’s.
Hmmm….now which Flow was it so I can take out that extra step?!