No it doesn't sound right and it's certainly not supposed to! What operating system and what firewall do you use, if you don't mind me asking? If others report the same thing then perhaps a pattern might emerge.
Changing an XRG file into an XRT file (or vice versa) can be done. You'll need a hex-editor, open the .rim file and find the 5th byte (0x04); the value is 1 for an XRG and 2 for an XRT (both in hex, not that that matters!). The XFG wheel is completely different though so you can't transfer designs to/from that.
If that's the only problem you have with the interface then you're very understanding; it's all horribly clunky and slow to use :-D I wasn't really planning to add/change much as my free time's a little limited these days but if I get a spare hour or so I might have a look at making it slightly easier to use.