Debug your automation and print log message before that move file activity and pass that file path variable in log message and see what you are getting,
compare it what you are getting and what it needs to be send.
And more over in config file make sure you are keeping with out any spaces at starting or ending if you are not sure about that then use trim at your variable.
Use log message activity to print and check the path printed is you want , as you it is working fine in 1st workflow check if variable still contains exact same path in second workflow.
Check the file extension, if manually path with extension is working then add extension in config file as well, If not remove extension from config file.