No. One option would be, before copying, to add a step that conditionally builds (and fails) if the file doesn't exist. For instance, a Run Program step with a command of 'File xyz does not exist', and a conditional build rule of '[vbld_FSO.FileExists("xyz")]' equal to 0. Or you could use a Run Program step of %DOSCMD% copy xyz <dest> on the individual file, and it will fail if the file doesn't exist.
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