The app Split PDF Layers splits a PDF file into multiple PDF’s based on its constituent layers. This can be done by splitting based on every single layer, or by combining the bottom layer with one of the upper layers.
There is also an option to only remove layers without splitting the file. The splitting behavior can be fine-tuned by defining a list of layers that should never be output and/or by defining a list of layers that should always be output. The fine-tuning can be based on the name of the layer or on its processing step property. The app also adds private data to the outgoing jobs so it remains possible to know further in the flow from what base job the new ones are derived.
Who needs to split layers, this app is life saver.
It does job with aplomb, could not find any shortcomings.