Copy or move files from OneDrive business to onedrive

Dear all,

I need to copy (actually move) a big amount of data from my OneDrive Business to OneDrive personal.

Aproximately 700GB.

The only solution seems to be moving/copying the files on my PC from folder to folder. 

But first of all I do not have that much space on my HDD and this will take days.

While these files are on the cloud only and I would like to shift them to my another acount.

There is one template in PowerAutomate which copies files from OneDrive to OneDrive business but I need the opposite. That template runs only when a new file is created or so.

I searched a lot and understand that Microsoft does not allow that?!?!!? Is that true?

Why? I mean both are my accounts, I have acces to them, so why the hell should that be not possible?

I would appreciate if anybody knows a solution for that.

Thanks