For several days now I have tried calling from my cell phone to my primary line, and no call logs would appear, even though subsequent calls from other numbers did appear. Then I happened to check the logs for my Add-on line, and the missing calls were there. They correctly showed calls from my cell phone to my primary line, but the records were on the page for my Add-on line.

What could cause that? I have no forwarding or routing set up for this line.