Does a previous AFSP approval get invalidated when making a new training request? If I've already been approved, and started training in one school and then create a training request to switch to another school, does the previous approval expire?

In other words, can I be simultaneously approved on two different schools?

I'm considering transferring temporarily to continue flying in a different region, but would like to have the option to return to my original school without yet another training request...
Yes, you can have multiple requests open at the same time. This is from the AFSP Candidate Application Guide (step 7):


  It is possible for a Candidate to have several active training requests at a given time. These requests may be for the same or different flight training providers. Each training request form will be processed separately; AFSP approval is valid only for the Provider listed in the application.