I think that is because when you delete your pages, the UI (visible ones you press) buttons on other pages are still 'linked' the to the buttons in the pages you are removing. In that case, you need to relink your UI buttons to the buttons in my pages (that's why I mentioned Ctrl-Drag) from my button onto your own.

Here's my suggestion.

1. Delete your pages
2. Leave mine there
3. Ctrl-Drag (may be Ctrl-Shift-Drag) from my '1' button for example to your UI keypad 1 button and a link to the button on my page will be added.

Note that there is no 'magic' way to replace all your buttons with mine without doing the work to 'relink' your UI buttons to the ones in my pages.