How to definitely remove a toolbar from Rhinoceros 8

Hi all,
we have created a new container on pc A and included some toolbars within it. We exported the container to use it on a different pc B.

Then we have updated the container either modifying or deleting some of its toolbars. Again we exported the contained and loaded it on pc B. Toolbars seems not to update correctly.

We tried to remove them from pc B but without success.

So, which registers and/or xml configuration file contain info about a given toolbar? Where to find them? How to delete, modify them in order to have the toolbar definitely removed?

Thanks in advance

Ciao Sergio.
Forse sbagliato gruppo?
Hai provato con il comando: _Reset ?