Hello!
You should be able to load your saves from previous versions without loosing any progress.
You should also have no problem updating the app on your phone (if you are using the android version).
The easiest method is to find the data on you phone you go to ANDRIOD-DATA and find APH.MCS.COM and you copy it and paste it you another folder....thats what I do in every updates...and if the update is released you can copy the APH.MCS.COM to the random folder you paste it and copy/move it back to ANDRIOD-DATA easy as that