Visual Studio 2013 CE keeps overwriting Task list

Question

I was able to edit Task prefixes at first, but after a while, the settings were somehow, somewhere cached, and regardless of what I do, the settings stay the same. I tried to:

• edit settings from VS
• delete settings file (the file resurrects magically)
• import/export settings
• edit Current.vssettings file directly

Nothing worked. The settings are always reverted to their previous state. I am able to change some settings which take effect in the current instance, but other settings ignore that too. For example: line numbers work, but Task list doesn't work at all.

Answer 1

It worked magically. I deleted all settings files. After I changed the Line numbers setting it accepted the task list changes too.