Your counterparties are far less keen than you to use your end-to-end contracting workflow.
They may well insist that you follow their process, not yours.
This poses a problem: the built-in contract repository depends on contracts having stayed within the neat end-to-end walled garden throughout the deal. Anything that originated from outside is doesn't fit.
Why is this a problem?
Walled gardens don’t offer much protection if you step outside of them.