Archiving FI, CO, PCA and PA entries linked to an Invoice

Hi Guys

I've gone through a process of archiving Sales orders, Deliveries, Goods Issues and Billing Docs, but now i'm left with the final step of Archiving the Financial Documents.

Each Invoice we produce has the following documents.

So now i'm a bit unsure how to proceed with these documents as I need to archive all 4 types. I was hoping that by Archiving object FI_DOCUMNT it would automatically archive the related docs but it seems not.

So my question is, which archive objects to use for each document above and which order should these be done in?

The PA documents have Characteristics and Value Fields for each line item if that helps.

Any Assistance will be greatly appreciated.

Regards

Grant