Yes! Consult your lender. I do a lot of business with Robert Trowbridge. He's awesome at explaining the ins and outs. He gets deals closed. His number is 951-488-3173. His email is firstname.lastname@example.org.
But may I offer a suggestion? Don't waste your time with a short sale. 50% of the listings are short sales but less than 5% of the closings are short sales. The other 95%? Almost all are bank owned foreclosures.
One client of mine wanted short sales. I was able to show her how the house she liked as a foreclosure was a short sale a few months ago. The only difference was about $100K.
The moral of the story? Know your needs (features, size, location, etc.), then search the REOs.
Look at Short Sales, but know that they're a lot more complicated than REOs. How many lenders are involved? Are there other liens? How short is short? When was the notice of default posted? Have they received the Notice of Trustees Sale yet? Has the Bank already reviewed another offer? And much, much, more.
Thanks for the opportunity to help. Let me know if you need anything else.