How to find Parent Model for FAD diagrams

Hello,

We have a unique problem - 

Last year, we moved all the FAD models from across folders that they got created in through Satellite modelling to a common folder called ' All FAD Folder'.

Now the decision is to move them back to where there respective Parent models lie. 

How do we find where the Parent BPMN Process models are to which these FADs would belong to?

Please help - any recommendation is much appreciated!

Thanks