Cloning of rules engine conditions and filters

It would be great if rules engine filters and conditions (Preside Admin Top Navigation System menu) could be cloned. This would ease the creation of multiple similar complex filters.
I have a use case where a lot of very similar filters exist, e.g. 4 of the 5 expressions used are the same and only one differs. It would dramatically speed up management of those if I could just clone + adjust the one single expression.