There is a convenient way to deal with the daemons after bulk summons:
After bulk summon:
If there is overflowed daemon(s), you will see an arrow on the screen’s right-down side. Click the arrow, and select sell overflowed daemon(s), then you will find it much easier to organize your daemon inventory.
This is based on your already owned daemons in your inventory. Maximum 5 will be kept in your inventory (including limit-break times).