Difference between FEBA & F-28

Hello Experts,

My query is My company code is configured Electronic bank Statement settings & getting entries in FEBA.

My question is what is the effect of FEBA entries in SAP. Is it immediately after uploading the EBS file in SAP the Interim Bank G/L will be cleared or once we do  double click entries in FEBA & post.

Can I do this process through T-code F-28 even the FEBA entries are in status To Be posted (Red in colour). In this case how can I manage FEBA entries.

Thank you,