Error during analysing of the org metadata - Object Missing

[skalitom]

Hello,
Retrieving core object works perfectly.
But it seems SFDMU is not able to read some add on objects / fields like the one coming from Revenue Cloud Advanced (RCA is replacing CPQ).

Here's my JSON :

{
    "objects": [        
        {
            "operation": "Insert",
            "externalId": "Name",
            "query": "SELECT Id FROM UsageResource"
        }
    ]
}

And here's what I get from log (no target file generated) :

=== Getting and analysing object metadata ...

[11:37:12.511] Fetching metadata of the UsageResource (Source) ...
Command in progress... done

[11:37:12.765] [ERROR] Error during analysing of the org metadata: The object UsageResource is missing in the Source..
[11:37:12.778] [ERROR] Execution of the command sfdmu:run has been completed. Exit code 3 (ORG_METADATA_ERROR).
[11:37:12.781] Total time elapsed: 00h 00m 04s 232ms .

Similar to this issue, when I try to read UsageModelType field (introduced by RCA), field is not simply ignored :

Command line :
sf sfdmu run --sourceusername mySandbox --targetusername csvfile

Export.json :

{
    "objects": [
        {
            "operation": "Upsert",
            "externalId": "Name",
            "query": "SELECT Id, Name, UsageModelType FROM Product2 LIMIT 1"
        }
    ]
}

Target CSV file / Product2.csv :

Id,Name
01tAP00000GlvcnYAB,MY PRODUCT NAME

As we can see, field UsageModelType is missing