Affect Line Postings External Supplier Invoice

Hi,

I have enabled ‘affect line postings’ on External Supplier Invoice on IFS Cloud, I am adding prepostings on Cost Cent, Project and Project Activity Sequence. When the invoice is created, in the posting proposals all the prepostings are getting copied except Project Activity Sequence. Is there some setup that I am missing? 

Thank you very much!

Regards
Rutuja