If no LabVIEW is opened, then clicking on the shell context menu "Open in LabVIEW File Version" opens the files (.vi/.lvproj/.ctl) in correct LabVIEW version.
However, if the LabVIEW is already opened and then when I open the files from explorer using "Open in LabVIEW File Version" uses the recently opened LabVIEW version.