Duplication of just about anything is capable through the use of an Architect Table and Builder.

This is done by placing a storage-block of any type or mod within the designated border of an Architect Table, right-clicking said storage (after filling it with the desired resource / item) with Mekanisms "Cardboard Box" and creating a Blueprint.

After doing this, take it to the Builder and it'll only ask for just the Cardboard box, but as soon as it's thrown into the world, you can undo the Cardboard Box and effectively dupe the storage-block as well as its contents.

Hope this helped. Cheers.

Yeah, tested on Wanderlust Reloaded which is running BC 6.2.6 currently.

Sorry if I fail to accurately provide adequate information, it's honestly the first time I've ever actually reported any of the bugs / glitches I find.

BC 6.2.0 was supposed to fix that. Are you using BC 6.2.0?

I can't believe it took us this long.

Please try to link in what commit that fixes an issue. You can even have issues closed automatically by having a code in the commit text.

https://help.github.com/articles/closing-issues-via-commit-messages/

@SandGrainOne I have. It just appears I forgot to push.