Block within block editing

I am working on a program that counts blocks with attributes and sends it to an excel file for quicker BOM creation. I'm currently setting up our 'library' for a project that's about to get started by making blocks from existing blocks.

While chugging along and testing out the program, it was coming up with redundancies in the counts.

I didn't explode the previous block when making our new ones; so it's counting the original block within the new ones. I've already created about 20% of what we will need, but I want to get rid of the initial "state of block"s from these new ones.

Is there a way to purge or rid the base block entities from these new blocks in a way that doesn't require me to go back, explode, explode, then re-create what's needed?

I guess to make this simpler:

I know that you can't purge nested blocks by conventional means:

Is there a way around this?

Aye. Nevermind. I'm just starting from square one anyway.

But if you do have a method, feel free to still post it. I'm sure it'd be a good future reference.