When trying to resolve include files (copybooks, PL/I includes, JCL procedures, etc.), the EA Parser will look at all folders trying to find names that match the included file. If only one match is found, it will use that file. If more than one match is found, EA Parser takes the following steps to resolve which of the matching include files is the one to use:
C:\Workspaces\FS Doc\Sources\Data Center 1\DC1 Mainframe 1\SYS1.COPYLIB
Data Center 1\DC1 Mainframe 1\SYS1.COPYLIB