New setup - OneDrive

So I setup Duplicati with OneDrive v2 personal. Got it working, let it do its thing and it backed up everything. But it was set to encrypted and 50MB packs, so now I have a ton of 50mb aes files in a folder on OneDrive.

I was hoping I’d be able to have a NAS locally and be able to dump files on to that and then have the server back them up to OneDrive once a day. That way I’d be able to access them through my local network faster than I can download them from OneDrive as well as be able to access them through the OneDrive website if I happened to be somewhere off my network. But with all aes files, I can’t tell what is what to download and unencrypt.

Am I trying to do something that is not possible with Duplicati and just misunderstood how it works or am I missing something?