release management - Signinig off android apk with the copy of keystore -

could please clarify if can use copy (created @ release #1) of keystore signing off new release (let release #3) of android apk, if previous release (#2) signed using original keystore? or should make backup copy of original keystore each time when new release signed off?

you can use time want, , copy want.

the important thing once upload apk , release updates can signed same keystore. can , in fact should store keystore files @ multiple places don't lose them. did once , awful, not recommend. :)