I suggest that Rhamphorhynchidae (basal pterosaur group) is the ancestor of Scansoriopterygidae (basal paraves group).
Scansoriopterygidae are basal paraves with flight feathers on the arms and legs.
Scansoriopterygidae (or a group very much like it) is the ancestor of the later Paraves such as Microraptor, Archaeopteryx etc.
Rhamphorhynchidae pycnofibres are homologous (ancestral) to Scansoriopterygidae feathers.
The Rhamphorhynchidae long bony tail is homologous to the Scansoriopterygidae long bony tail.
The Rhamphorhynchidae caudal rods are homologous to the Scansoriopterygidae caudal rods.
The Scansoriopterygidae elongate outermost digit is transitional between Rhamphorhynchidae and later Paraves.
The Scansoriopterygidae wing feathers replaced the function of the wing membrane of their pterosaur ancestor. The membrane close to the arm (patagium) remained.
The Scansoriopterygidae hindwing feathers replaced the function of the uropatagium of their pterosaur ancestor.
The Scansoriopterygidae propatagium IS the propatagium from their pterosaur ancestor.
Scansoriopterygidae is one of the most basal (primitive) members of paraves.
It used the same muscles as pterosaurs for flying. It could splay its hind limbs like pterosaurs for flying.
The evidence strongly supports the transition from pterosaur to basal paraves, with Scansoriopterygidae being transitional.