Temporary move the class libraries in question out of the current project reach and on the next build you'll see what is referencing them.

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>I am trying to clean up a project of all classes (vcx class libraries) that compiler pulls in. These class libraries that I am trying to remove (not delete because they belong to another project) not use by this project now but maybe in a way were used before. I want to take one .VCX file at a time and find how it gets pulled in. How would you do it? TIA.