Question about Massachusetts taxing of an IRA distribution from a Rollover-IRA account...

I have both a Traditional-IRA account and a Rollover-IRA account.

For the Trad-IRA, I know my MA previously-taxed basis.  I've never taken any distributions from this Trad-IRA.

The RollOver-IRA was created from a 401K rollover, so none of RO-IRA has ever been taxed by MA.  I've never taken any distributions from this RO-IRA.

So, for a distribution and Roth-conversion from my RO-IRA account, I'm assuming that MA taxes the entire RO-IRA distribution amount, correct?

What confuses me is that the MA Schedule X Line 2 worksheet doesn't differentiate where the Roth-conversion distribution comes from.  

And since the worksheet talks about "Total" contributions & distributions, should these totals be based on just the Trad-IRA, or the sum of my Trad-IRA & RO-IRA?

As an example, if my Trad-IRA basis is $20K, and I do a distribution/Roth-conversion of $5K from my RO-IRA, and this is my first distribution from either account, does MA expect to tax the $5K Roth conversion or not?

Do I only fill out the Schedule X Line 2 worksheet based on distributions from my Trad-IRA?

Or do I fill out the Schedule X Line 2 worksheet based on all my IRA accounts (both Traditional and Rollover)?

Thank you for any help!