Explanation:

We are analyzing the JSON for definition.pbir in a Power BI Project:
{
" version " : " 1.0 " ,
" datasetReference " : {
" byPath " : {
" path " : " ../Sales.Dataset "
},
" byConnection " : null
}
}
Statement 1:
" definition.pbir is in the PBIR-Legacy format. "
No # The legacy PBIR format references datasets by byConnection (pointing to the Power BI service).
Here, it uses byPath , which is the new project format , not legacy.
Statement 2:
" The semantic model referenced by definition.pbir is located in the Power BI service. " No # The JSON shows byPath: " ../Sales.Dataset " , meaning the semantic model is referenced locally within the project folder (Sales.Dataset), not in the Power BI service.
Statement 3:
" When the related report is opened, Power BI Desktop will open the semantic model in full edit mode. " Yes # Since the semantic model is referenced by path (local PBIP project files), Power BI Desktop will open the model in full edit mode . If it had been byConnection , it would open in live connect mode to the service instead.
PBIR-Legacy format # No
Semantic model in Power BI service # No
Opens in full edit mode # Yes
References:
Power BI Project (PBIP) structure
PBIR formats: byPath vs byConnection