Entering Project information on Miscellaneous Receipt (Inventory)

On Misc Transactions, could you help me understand why there are two separate sections to enter Project Task information: 1. “Line Details > Inventory Attributes” and 2. “Project Details” (which includes Project, Task, Expenditure Type, and Expenditure Organization)?

During my testing, I noticed that when I enter the project in the Inventory Attributes section, it triggers the cost valuation at the project level. However, if I only enter the project information in the Project Details section, the transaction seems to be sent to common inventory instead of associating the cost with the project. Could you please clarify the intended use and impact of each section, and why this difference in behavior occurs?