Can you spot an issue with my Config Spec?

Version: Windchill 13.1

Use Case: I'm creating downstream branches for a Design BOM. I'd like to see them filtered for a correct alternate BOM number.

Description:

Hello,

I created a Design BOM, and then created downstream branches for a few nodes. However, the Structure browser doesn't behave the way I would expect -- it seems to disregard my Alternate BOM Number selection, and picks latest Manufacturing instead:

I wish I could get the same BOM, but with Design view for the bottom two parts.

I'm getting the same issue when querying it via WRS, both v3/BomTransformation/XBOMParts('...')/PTC.BomTransformation.GetManufacturingBOM and v7/ProdMgmt/Parts('...')/PTC.ProdMgmt.GetPartStructure with this nav. spec:

{
 "ApplicableType": "PTC.ProdMgmt.Part",
 "ApplyToTopLevelObject": true,
 "ConfigSpecs": [{
 "@odata.type": "#PTC.NavCriteria.WTPartStandardConfigSpec",
 "WorkingIncluded": true,
 "View": "Manufacturing",
 "Variation2": {
 "Value": "002",
 "Display": "002",
 },
 }, {
 "@odata.type": "#PTC.NavCriteria.WTPartStandardConfigSpec",
 "WorkingIncluded": true,
 "View": "Design",
 }],
 "HideUnresolvedDependents": false,
 "UseDefaultForUnresolved": false,
}

I have very limited experience with MPMLink and will appreciate your insights.

Thanks,

Constantine