Used space increased after migrating data to "internal"SD

Formatted a 128 Gb samsung sd card as internal shared storage then when phone prompted to migrate data i did , after this my phone is more full than before. Setting>Storage>Internal shared storage shows same numbers as my internal memory showed before which is 64 Gb almost full while Setings>Storage>Samsung SD card shows crazy numbers like 137 Gb used out of 256 and 130GB used for system , 5GB for apps with 0 apps on it etc. How can i format the SD as portable again without having to reset...

Used space increased after migrating data to "internal"SD

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