Need help restoring Boot Camp from DMG

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Hello, I'm relatively new to Macs. I had Windows 10 on Boot Camp, but I didn't partition it correctly and ran out of space after installing everything else. I read some articles on how to extend the partition. I created a backup disk image of Boot Camp, then merged and deleted all the partitions, then created a new Boot Camp to restore to.

But the problem I have right now is that I can't restore the DMG to the new Boot Camp partition ("source format not valid for restoring" error). When I run "Scan Images for Restore" on my DMG, it returns error code -50. And when I mount the DMG in Disk Utility and try restoring from it that way, it says "could not change the partition type." From what I gather, it's because my original partition was disk2 and this new partition is disk0s4. But I'm new to Macs and not used to the file architecture or setup.

It was a full file system with close to 100GB of data and all updates, so I'd love to just copy it over and forego Creators Update and reinstalling every application and asset I had. Can someone help me fix this?
 

chscag

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Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
There are several ways to enlarge a Boot Camp partition:

1. There is CampTune by Paragon Software

2. or WinClone

I'm not sure what you've done can be fixed in a conventional way. You may have to start over. However, before doing that you might try using one of the methods I linked to above.
 

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