I have my PMDG 777 (777-200LR/F Base Package + 777-300ER Expansion Pack)
installed on my current computer. If I upgrade my OS (Operating System) from
Windows 7 32-bit to 64-bit and need to uninstall FSX until the completion of upgrade,
do I need to unregister PMDG 777 in the FMC and register it again after the reinstall of FSX ?