Keyboard shortcuts

Hello Experts,

One of my customers is using the Keyboard Shortcuts (CTRL-F2 - CTRL-F12) to start his programs in SBO.

He claims that the content of the Keyboard shortcuts changes, so an other program is selected as was previously defined in Tools - MyShortcuts. (not on a dayly base, but p.e. after an patch update from SAP or an add-on update)

My questions:

Where does SAP store these Keyboard shortcuts?

Has any of you experienced this and know how to solve this?

Kind regards,

Henk Tjassing