Switching from Wi-Fi Interop to GPS Sync on A5

I could easily be missing something here. I just moved legacy NSM5 clients off an A5 and now it only has C5s on it. I wanted to move it from Wi-Fi interop to GPS sync but it seems I can’t select that option any more with fw 2.0.2. The option is there but it is lightly greyed out and can’t be selected. Am I missing something or is this a bug?

A5/C5 GPS-Sync (TDMA) is greyed out in both 2.0.1 and 2.0.2. I provided an update about our progress here: New Access version 2.0.2 released for A5 and C5!