Why line Item fields get refreshed after attaching the document?

Hello,

I am using Document Type business process in which I have a line item section where you need to attach the document.

In Line Item Section, We have certain fields:

1. Document Owner

2. Document Title

3. Revision No.

4. Issue Date

5. Line Item Status

6. File Name

If I fill fields from S.No. 1 to 5 and then attach the document,

1. Document Title

2. Revision No.

3. Issue Date

gets refreshed.

Is there any solution or workaround for that?