Individual file names within portfolio showing different names when opened individually

[Elizabeth33634839y31n]

I'm working with a portfolio (originally created in BlueBeam) that has multiple files in it. Each file within the list is showing a specific name - this is the name I want shown - but when i click on the file, or open it, a new name shows. How do I remove that new name? 

Important detail: there are seals and signatures on these documents, so they might not be able to be changed. 

[Edited by moderator: Please refrain from sharing your personal details here.]

[Bernd Alheit]

May be that Acrobat displays the document title and not the file name.

[Elizabeth33634839y31n]

EDIT: below is a screenshot of what i'm talking about

[Dave Creamer of IDEAS]

This is the setting @Bernd Alheit referred to:

[Elizabeth33634839y31n]

Unfortunatley, that didn't work. I changed it first to Document Title and then back to "File Name" and both still show that old name at the top

[Bernd Alheit]

What do you see when you save the extracted document?

[Elizabeth33634839y31n]

When I choose "extract from portfolio" the document shows the correct file name (the "1800..." one)

[Dave Creamer of IDEAS]

Acrobat shows the file names in the portfolio. It has to be a BlueBeam feature, perhaps named after the project name or number. Check your BlueBeam preferences.