Genexus

I have a simple WWSD app deployed on Android now and have a few questions
about the .apk file.

1)  What types of changes would require me to copy that .apk file to the
web server again?
2)  If there are cases where the .apk needs to be 'redeployed', is there
currently or will there be any tool to help do this (maybe include it in
the static content of war file)?
3)  When would I deploy the zzz.apl versus the zzz-unsigned.apk?

Thanks for any information on this.



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