Although they might be in the same key, I think Valdambrini likely thought of them as separate pieces. He actually uses the term "Partita" when he follows a dance with a variation. His 5th, 9th, 10th, and 12th Corrente, for example, are all followed by a single "variation" marked "Partita". The original dance and the Partita are all written in AABB form, assuming those are repeat signs.
But if you like grouping them, I'd say just do it!