Weird Time Capsule Problem

I just got a new 1TB Time Capsule to replace my wired Time Machine
volume (USB). I ran into some problems with my machine and decided to
restore it from an earlier backup. I temporarily switched back to my
older Time Machine volume (the wired 750G) and, after an aborted
attempt (machine wouldn't start up), I tried a second time and
successfully restored the machine to a version a few days old.

Since then I've noticed that new backups are apparently being done
(the time machine circle is rotating), but going into time machine, I
see no backups available newer than a couple days ago.

Secondly, the image of the "Gmark's Time Capsule" is no longer a time
machine blue drive icon, but a plain white desktop-mounted drive icon.

Thirdly (and I'm not sure if this is actually new behavior for the
Time Capsule, but it's new because it didn't behave like this with the
wired Time Machine setup), I cannot get into the terminal window and
"cd" to the backup directory anymore. I cd over to root, then to /
Volumes and then am not allowed to cd to the mounted Time Capsule
directory which still appears there, even though it does NOT show up
on the desktop. However, the new, plain, white "backup of XXXX" does
appear, although all the backups (still only up until a few days ago)
appear.

What's going on? Where are the new backups going? How do I fix
this?

What have others seen? Are you able to "cd" to the Time Capsule and
look around it like any other mounted drive (like I used to be able
to)?

Thanks!

Mark