This is more a question of perception. Consider instead that rather than move assets, you could change the beneficiary of the account from which you want to draw funds. So regardless of which plan you want to draw from, when it comes time to pay you can change the beneficiary listed on any account.
It helps if you think of the accounts not as a single account that "belongs" to a specific beneficiary, but instead as a pool of assets from which to draw.
VP, Research & Development
This information does not constitute tax advice and is provided for informational purposes only. Please consult your tax advisor, financial advisor, local taxing authority, and/or plan provider or sponsor for more information.