just was wondering how could I update an app actually in use, so could not unistall it, so without losing data. Whats the best way? There is an automated feature for this? Thanks
At the moment there is no automatic feature for this. This is something that can never be fully automated, because an app can be changed in so many ways 2sxc could never automatically figure out how to merge.
I'll try to write a guide some time, but in general there are three quick strategies: if only the views/templates changed, just replace them. If way more changed you could export-import the content-items from "old" to "new" - or you could export/import the schemas from "new" to "old"