Close Associated Datasets wrong operation

[bsoher]

Had two eja_svs_mpress data sets open with edit0.on, edit0.off, edit0.sum, edit0.dif and edit1.on, edit1.off, edit1.sum, edit1.dif tabs open in Dataset notebook. Clicked X in tab for edit1.dif. Dialog asked if 'close associated'. Said yes. Four tabs closed, but the remaining four were mix of Edit0 and Edit1 tabs.