VS Shell how to override RemoveProject command?

Hello.

I am working with Visual Studio Shell project.

I want to change default dialog for removing project from solution and also add funcionallity to delete data from disk.

However, I put breakpoint in ProjectNode class on ExecCommandOnNode and when I choose "Remove" from context menu in Solution Explorer, it hit that breakpoint and aiCommandID was set to VSConstants.VSStd97CmdID.Delete. 
But when I select project in shell and press shortcut "Del" on keybord or when I select Remove from menu "Edit"->"Remove" for removing the project from solution it don't hit breakboint in ProjectNode.

I also tried to override void Remove(bool removeFromStorage) in (custom)ProjectNode but it works only if I choose "Remove" from context menu.

Where is the best point or what is the best way to override Remove command?

Thaks!
Turce