
Hi @Matti ,
Welcome to Q&A forum!
Unfortunately, there is currently no direct way to sync files between sites.
But there is a workaround for your reference:
Use Power Automate
When a file is created or modified in a library in site A, the file will be copied to a library in site B.
Set the properties such as:
Current Site Address–Set the source site address
File to Copy– Choose the file path that you want to copy
**Destination Site Address–**Set the destination site address
Destination Folder– choose a destination folder where you want to store the copied files
If another file is already there– Select an action if the file is already exist
The result:
Create the same flow again and exchange sites to achieve synchronization.
Hope this is helpful.
Have a nice day! :-)
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