I am not sure about if we release new version of App on App Store and users get it installed. Now in this case, the existing JSONStore data of previous version of the App, Will be there or will be wiped out?
If it remains then good, otherwise what workaround we can do here. Any suggestions, please.
Thanks
Please note that asking on StackOverflow is not a replacement for rigorous unit, functional, etc. tests and having quality assurance as part of your development processes. I would advice you test this if you're not already: install the Worklight Application from the App Store, then upgrade to the new version and check if everything is still working... before going into production.
As long as you don't change your collections' metadata (name, search fields, additional search fields, etc.) JSONStore should keep working fine when you upgrade.