We archive some of our older document libraries and I am not sure how it was done previously (possibly just moved using explorer). But I think I am correct in saying document library's shouldn't be moved this way? Is there a procedure to follow to move a document library?
there are couple of ways to get this done.
- Move using the explorer which you already know.
- Use the OOTB features called information management policies
- You can write a workflow which move the documents from one library to other. check this video or this one
- Another way is save the document library as template with Include content options. But this has size limitation.
- Lastly you can write some code to move documents. check this