Currently it's impossible to restore (or even review) the Places and Segments, which were deleted. There are simply no traces left and objects are lost for good. (with their history and complexity)

I suggest to add the new WME layers with deleted Segments and Places.
That would allow the review of what, when (and by whom) were they deleted with a possibility to recover/undelete those objects. (again, incl. all attributes and history).