No. User Arps are not included in the .X7B (nor are User Curves drawn for the MSeq). Neither are User Waveforms
This makes the .X7B File good for personal use in all cases (because it will Reference *your* MONTAGE)... But not so useful in sharing data with others without the data Stored in your system’s folders, the Bulk will not include data stored separately on your MONTAGE.
Go to [UTILITY] > “Contents” > “Data Utility” > here you will see your User Data Folders... Preset Arps are in fixed number locations shared by every MONTAGE on the planet. Your User Arp Folder is unique and the data in it is not shared in the Bulk File of an individual Performance (which could reference any number of User Arps)
In order to share with someone else, data like User Arps and User MS Curves, you would need to save as a User File .x7U so that the User Folders containing the actual Arp and MS Data is also included. However for use at home, the .X7B is a convenient way to archive your personal data... when using it in Cubase your files are automatically placed in the MediaBay