Discrepancies in document activity timing

@Zacc, how are the documents being moved into this document library? If you are moving documents from a source doc library into this library they will retain their original "Created" and "Created by" metadata, even after you move them into the new library. (But in the "Information" blade, the created date for the entry in the new doc library will be the date it moved in.)

Take a look at this example. My colleague, Derek, created a file in a document library back in April. Today (in August), I (Emily) performed a "Move to" from that source doc library into a new doc library. Notice that the metadata retains Derek as the creator and retains the April 7 "Created" date, but in the "Activity" (Information) blade, you can see the file was created today.