I converted the step files to solidworks parametric model by using the Feature recognigation option, afterwards i make the assembly with using the recognized modelsi i defined the mates save the file and closed but when i opene the same assembly file next time i use force rebuild option (Ctrl+Q) i found whole mates in my assembly shows error and position of the parts will be changed once again i re mate the files and open again i found the same error this is very frustrated me please help some body how to resolved the issue please