Adding a fields from BKPF to 0FI_GL_4

I have a requirement to add 4 fields from BKPF table to GL Line Items extractor (0FI_GL_4).  I understand from the documentation that fields from BKPF and BSEG can be added without any coding.

I have included the fields from BKPF  into CI_BSIS.

Fields from BSEG are getting populated but not from BKPF.

Do i need to do anything else to make sure, the fields are getting populated from BKPF also.