[Windows Mobile] af974:
I solved in this way:

Delete the mxipupdate_projectdefault_a_000.provxml in Project a.

Add these line to app.reg in Project a or another folder:

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Today]
"Name"="Home"
"Rank"=dword:35a4ebce
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Multimedia]
"Group"=dword:00000001
"Icon"="\\Windows\\HTC_multimedia.png"
"Rank"=dword:35a4eb06
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Office Mobile 2010]
"Rank"=dword:35a4e926
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Outlook]
"Group"=dword:00000001
"Icon"="\\Windows\\HTC_outlook.png"
"Rank"=dword:35a4e85e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Tools]
"Group"=dword:00000001
"Icon"="\\Windows\\HTC_tools.png"
"Rank"=dword:35a4e7e6
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Messaging]
"Group"=dword:00000001
"Icon"="\\Windows\\HTC_messaging.png"
"Rank"=dword:35a4e53e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Calls]
"Group"=dword:00000001
"Icon"="\\Windows\\HTC_calls.png"
"Rank"=dword:35a4e49e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Settings\System\MyCpl.cpl,61]
"Icon"="\\Windows\\Start_Icon_TaskMgr.png"
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Multimedia\Pictures & Videos.lnk]
"Icon"="\\Windows\\Start_Icon_Photos.png"
"Rank"=dword:35a4eade
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Multimedia\Windows Media.lnk]
"Icon"="\\Windows\\Start_Icon_WMP.png"
"Rank"=dword:35a4eab6
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Outlook\Contacts.lnk]
"Icon"="\\Windows\\Start_Icon_Contacts.png"
"Rank"=dword:35a4e85c
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Outlook\Calendar.lnk]
"Icon"="\\Windows\\Start_Icon_Calendar.png"
"Rank"=dword:35a4e85a
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Outlook\Notes.lnk]
"Icon"="\\Windows\\Start_Icon_Notes.png"
"Rank"=dword:35a4e858
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Outlook\Tasks.lnk]
"Icon"="\\Windows\\Start_Icon_Tasks.png"
"Rank"=dword:35a4e856
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Tools\ActiveSync.lnk]
"Icon"="\\Windows\\Start_Icon_Async.png"
"Rank"=dword:35a4e796
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Tools\Internet Sharing.lnk]
"Icon"="\\Windows\\Start_Icon_IS.png"
"Rank"=dword:35a4e746
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Tools\Search Phone.lnk]
"Icon"="\\Windows\\Start_Icon_Search.png"
"Rank"=dword:35a4e71e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Tools\Remote Desktop Mobile.lnk]
"Icon"="\\Windows\\Start_Icon_HTC_Remotedesktop.png"
"Rank"=dword:35a4e58e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Messaging\Messenger.lnk]
"Icon"="\\Windows\\Start_Icon_Messenger.png"
"Rank"=dword:35a4e53e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Office Mobile\Excel Mobile.lnk]
"Rank"=dword:35a4e8fe
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Office Mobile\OneNote Mobile.lnk]
"Rank"=dword:35a4e8d6
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Office Mobile\PowerPoint Mobile.lnk]
"Rank"=dword:35a4e8ae
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Office Mobile\Word Mobile.lnk]
"Rank"=dword:35a4e886
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Settings.lnk]
"Rank"=dword:35a4ece6
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Phone.lnk]
"Rank"=dword:35a4ecbe
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\E-mail.lnk]
"Rank"=dword:35a4ec6e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Internet Explorer.lnk]
"Rank"=dword:35a4ec1e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Games]
"Rank"=dword:35a4e9ee
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Games\Bubble Breaker.lnk]
"Rank"=dword:35a4e9c6
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Games\Solitaire.lnk]
"Rank"=dword:35a4e99e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Marketplace.lnk]
"Rank"=dword:35a4e94e
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Microsoft My Phone.lnk]
"Rank"=dword:35a4e94c
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Windows Live.lnk]
"Rank"=dword:35a4e94a
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Getting Started.lnk]
"Rank"=dword:35a4e948
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\File Explorer.lnk]
"Rank"=dword:35a4e3ae
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Help.lnk]
"Rank"=dword:35a4e386
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Search Widget.lnk]
"Rank"=dword:35a4e426
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\MSN Money.lnk]
"Rank"=dword:29b926ff
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\MSN Weather.lnk]
"Rank"=dword:29b926fe
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Facebook.lnk]
"Icon"="\\Windows\\Start_Icon_HTC_facebook.png"
"Rank"=dword:29b926fd
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Task Manager.lnk]
"Rank"=dword:35a4e3a4
;%%REMOVE%%
;%%REMOVE%%

[HKEY_LOCAL_MACHINE\Security\Shell\StartInfo\Start\Live Search.lnk]
"Rank"=dword:35a4e422
;%%REMOVE%%
;%%REMOVE%%