A/R Tables and Process

Hi,

Can any of you pls let me know , what the flow of data is in A/R process i mean for open items and cleared items.

1. If a open item is cleared will the document still be in BSIDand BSAD or BSAD only.

2. what is the link which we can use to tie the records in BSID and BSAD.

any help would be appreciated and points will be awarded.

Thanks

Priya