The PLC has a program in it that possibly programmed using LOGIC master, which I do not have. Prior purchasing "Proficy ME 8.5" I talked to GE tech support and the vendor, and they said I should be able download and upload the plc program easily. I can connect the CPU and upload the program into new project, but when I validate the uploaded project verses what in the processor, I get not equal. after the program upload, the software indicate that some areas in the program will not be transfer like %T. Prior the GE free technical support ended after purchasing the software, I remember one tech. told me to download what I uploaded to make them equal, I was afraid the consequence CPU does not run the same due to incompatible instruction set or other functions between logic master and Proficy ME. I am putting as much information as I think might be relevant to my question. what to do to making them equal?