Things that probably happened while Imogen and Alev was having future shenanigans:
Sky( Starly);, who was formally really peppy and happy go lucky, became distraught by their disappearances. He began to overwork himself in jobs to keep up the Team Fate name, but he was less happy doing the work( it didn't help that he starting to get a small crush on Alev before their disappearance).
Barb ( Barboach) would often come to comfort him, makes sure he eats and takes care of himself. She feels the most guilty, as she was one of the last Pokemon to go on a dungeon crawl with them, so she puts a lot of pressure on herself. Her and Renee ( Bagon) has gotten....close( wink wink, nudge nudge), but neither of them has said anything about it.
Speaking of Renee, she's been thrown through a loop. She decides to join this adventuring business and the next thing she know her bosses are gone. Like. What?? She's not as attached to Imogen and Alev as the rest of the team, but she does respect them a big deal, so it did kinda hurt. She tries to be the rock for both Star and Barb to lean on if they need it.
Bidoof. My poor boi. He though he lost his two best friends. Oh, was he worried. Sunflora and the others tried to keep his spirits up, but he wouldn't help but think the worst. He trained himself extra hard, just so Imogen and Alev being gone wouldn't amount to anything!
So. With all that said. You could imagine the tearful reunion that took place when Imogen and Alev finally came home!