Configuration Change in OAC3 for Attachment in DMS

HI All,

I had created a Document type as ZPRPDF and maintain the configuration against the Requisition object in OAC3. i have some entries for that (some attachments) . Now i want to change the Configuration for requisition object and maintain it against newly created ZALLPR. so i have few question

1) whether it will affect the already attach files i.e while open the file??

2) will it delete the mapping between the Requisition number and File ??

Thanks In Advance.

P$G