LC 9.6.0 DP 2 Question

[Charles Szasz]

I just started using LC 9.6.0 DP 2.  Since it is a developer preview, I save my changes by using Save As.  When I used Save As with a different stack name, I get several options for the stack format.  What is the recommended stack format so you can continue to use LC 9.6.0 DP 2. with the stacks?  Please note that I am not trying to save the LC 9.6.0 DP 2 with Save As for stack compatibility with previous versions of LC. 

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