No. Clone always copies within the same channel: the Meal Prep Menu clones to Meal Prep dates, the Catering Menu to catering dates, and so on. To reuse the same meals on another channel, save them as a preset menu and tick multiple entries under Select Modules (Meal Prep, Catering, In-Store, Realtime, POS, Wholesale, Retail) when you create it, then apply that preset from the Select A Preset Menu button on each channel's page - or just add the meals manually there.