I spoke to the tax advisor in our local gemeinde and it turns out we have been paying the wrong canton tax since 2011...
How interesting.... Looks easy to sort out thank goodness. If you own property in a different canton to where you work then everything goes though the canton where you work. Of course... The other canton did not tell us to stop paying them the tax though.
Apparently you can photocopy the tax forms and just send the copies to the gemeinde where your property is.
If you own a property in CH and are on B permits you can file a tax return like on a C permit or earning over 120,000 chf per year.