I was in my 'master' branch when I thought of creating a new branch and did it by:
$ git checkout -b od_newstructure
Switched to a new branch 'od_newstructure'
The I committed few changes and added this new branch to remote and started tracking
$ git commit
$ git branch -u origin/od_newstructure
Branch od_newstructure set up to track remote branch od_newstructure from origin.
$ .. some other work including git pull and git push
I now wanted to switch back to master. So I did
git checkout master
Switched to branch 'master'
But then, master seemed not be tracking origin/master anymore!
$ git branch -vv
* master d1db2e3 Subdivided into several namespaces
od_newstructure d1db2e3 [origin/od_newstructure] Subdivided into several namespaces
It was also verified by a git pull
$ git pull
There is no tracking information for the current branch.
Please specify which branch you want to merge with.
See git-pull(1) for details
My question is why did the previous tracking branches lost its tracking information when I switched to a new tracking branch? Is this a default and sound behavior? Would I have to add upstream by git branch -u every time I switch to a tracking branch?