Some of Ash's reserved Pokémon to be physically dropped out from his post-retirement anime series?

Do you think that the writers will physically dropped out some of Ash's reserved Pokémon, including at Professor Oak’s Laboratory and at Professors Kukui and Burnet’s home, from his post-retirement anime series, the one set after the Journeys anime series finale, “The Rainbow and the Pokémon Master!”, because of various reasons? Or do you think that they’ll keep them all back into this series? Why?