My understanding is that My Backup Pro will only backup the data for some apps - very small number that I had installed. Unless you are rooted, the only way of backing up data in 3rd party apps is if they have there own backup built in. Coincidentally, these are the only apps that I have installed that My Backup Pro will backup data for.
Not having a way to back up data in ALL apps is my biggest complaint with Android! Since Android doesn't let you backup the data, it should be mandatory that app developers provide a way to backup data.
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