Hello ,
The quick field keeps the original doc. Creator after processing by another user. how to change that.
From what I recall you can't change this as Laserfiche effectively creates a new entry (along with a new Entry ID) so the only way to link them would be to retain the old Entry ID in a template field or similar. I just ran a test on a PDF that was already stored in Laserfiche and the processed copy and original have different Entry IDs. A consequence of this is that it effectively loses it's audit trail, unless you can obtain the old entry ID from a field.
Depending on your situation, you may be able to merge the documents, which would keep the original Creator, using either:
1) Document Merging options
(you'd be replacing the pages of the existing document with the pages of the created-by-Quick Fields document)
2) A Workflow with the Move Pages activity that you start from Quick Fields (passing the Document ID as a parameter rather than using a field):
To investigate:
You may also be able to set the Creator of the new document by using the Laserfiche SDK (but I'm not an expert on it and could definitely be wrong).