Zenon 7.20 and Zenon 8 backup conflict

Zenon 7.20 and Zenon 8 backup conflict

Hi,
i had already installed Zenon Version 7.20 SP0 Build23281 32Bit on my pc and i work on it for a long time, but now i have installed also Zenon Version 8.00 SP0 Build50155 64Bit on the same pc
The problems are:
-when i open one version 7.20 or 8 automatically open last workspace where i work and projects ask if i want to convert in one or the other version.
So i would like that when i open one version instead the other one automatically open last workspace of the version wher i work, is possible?
- second problem,and for me and my colleagues is a big problem, when i save a backup of one project for example with version 7.20 if my colleague want to open it and he don't have version 8 installed,he give an error and is not possible to open a project backup.
Also me, i tried to uninstall version 8, but when i try to open backup project give me same error .
There something that are in conflict and if you have 2 version of zenon installed and you save a project backup is not possible to open it if you have only one version installed on pc.Yhis is a big problem for us, please help us and give a solution if is possible
Thanks

This is a migrated post! Originally posted on 04.06.2019 by user CiroA. Please be aware that information can be outdated.