Tiresome indeed. Here is a novel concept. Why not quote from the actual Confederate constitution and show where it allows slave-free states to join and where it bans all slave imports. You can do that, can't you.
The Confederate Constitution banned the slave trade from anywhere but the places it was legal before secession ie it was still legal from slaveholding US states but nowhere else.
In other words it protected slave imports.
It also expressly allowed states which had banned slavery to join the CSA.
If it expressly allowed it then quote the clause.
Yes it is tiresomel - yet you keep doing it.
I have provided you quotes from multiple sources showing that Southerners meant exactly what they had been saying about limiting spending, crushing crony capitalism, keeping power decentralized and far from showing any kind of evangelical zeal for slavery, they largely just kept things as they were. Hell, the main differences between the Confederate Constitution and the US Constitution were the limitations on the power of government - not over slavery and that’s to say nothing of the US Constitution with the Corwin Amendment being a part of it.