Migrating from sencha touch to ionic. How I can restore the local data?

I’m developing a new version of an app already present in the apple store. The old app was developed (by another developer) in sencha touch 1 and store locally all data on a sqlite db, while the new ionic app store in the local storage.

My question is… when I will publish the new app what happens to the local data? There is a way to save the data from the sqlite db?