No. In order to aggregate, you must remain on the same channel.
If you aggregate and your time share group is granted but you need to change to a different channel because of interference or another issue, you can file to make the channel change following the normal guidelines for channel changes. If your group won their channels on points (resulting in the dismissal of other applicants), your pledges (such as main studio and local programming) will follow you to your new channel.
LPFM during the filing window
