How to 1031 portfolio of several properties owned by multiples LLC?

[Will Wu]

If someone has 20 multi families buildings (around 100 apartments) that are currently held on several LLC's. How can he 1031 to other properties? Since those LLC's are all independent entities and each building has its own folio and address is there a way to do it one 1 single transaction instead of doing it all separately? Can anyone with experience on 1031 teach me how to perform this transaction?