Accrued Revenue not generating Project Management Modules

Hello all;

In the Project Management Module , if i am selecting any project and from the navigation bar i go to manage tab , here there is one option Accure revenue as you can see in this image.

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In CU8 this option was working fine even i can import items from the item requirements and can generate revenue, but after updating to CU13 this option is not working , please see this image

Nothing is showing now, Can Somebody please help me, what is the problem and how can i fix it..

Thanks and Regards..