How to check if the document was replaced in Vault application

You would need to implement some kind of checksum like MD5 during creation and save in the metadata and then at check-in recalculate and compare it to the original

You want to differentiate between an edited document and a document that's been completely replaced?

Let's say I have a text document in M-Files.  I check it out and open the file in a text editor.  I delete all the content.  I add some new content to the file.  I check it in.

Is this updated or replaced?  I physically took all the content out and put new content in.

I struggle to see how you could realistically differentiate.

No, what I meant by replacing the document is you already have a document in m-files now you drag and drop another document on top of it and it asks you, do you want to replace the file ?, I need to listen to that event.

By the time that gets to the server, it has no knowledge of that.  It just knows that the file content is different to what it was before.

Even in UIX (client-side) code I don't think there is a specific event fired that would allow you to differentiate.

Ya, i thought so, updating or replace a document is a same thing from server point of view, it just updates the FilVer of the document