loss of collapsible-set/collapsible functionality within pop-up

loss of collapsible-set/collapsible functionality within pop-up

I am using the jQuery method .clone(true, true) on a pop-up element triggered by a map position toggle. The primary presentation elements within the DOM of this popup have been given data-role="collapsible" within a collapsible-set. Once this content is cloned to the pop-up when toggled (all content does appear), the expand - collapse functionality of the "collapsible" containment is completely lost. And I'm at a total loss now as to how to ensure that functionality persists. The documentation is thin on this point. Initially, I thought this issue might have something to do with scope because of use of the pop-up, but now I believe not. This is the last "item" on my path to project completion. Who can help? Any suggestions as to what may have contributed to loss of functionality will be appreciated.