Can you post the output of curl -X GET -H "X-API-Key: yourapikey" 'http://localhost:8384/rest/db/file?folder=F&file=pathRelToFolderRoot' | json_pp on both A and C for one of the files reported as out of sync. In windows powershell the command apparently looks like the following, I don’t know how to do it otherwise on windows:
(Invoke-WebRequest -Method Get -Headers @{"X-API-Key"="API-Key"} -Uri "http://localhost:8384/rest/db/completion?device=DEVICE-ID&folder=FOLDER-ID").Content | ConvertFrom-Json