FTV Studio comes in ME and SE flavors. If you bought the SE version, you also get ME. If you bought ME, you only get ME. FT only allows one installed version. On the ME side, you generally use the latest version. You can use that to create runtime applications for older PanelViews.
The application has to be converted to the version you are using. If I send you a version 9 application and you are using version 11 then when you open it , it will be converted to v11. But then you could create runtimes for anything from v5 through v11. You can support multiple versions of PanelViews with that one software version.
FactoryTalk View SE on the other hand doesn't have hardware to support so there are no runtimes. But it only supports one version. If I go to a customer site my version has to match theirs. We keep VMs with the different versions.
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