The Model Import node on the Model tab should be able to help you, here is part of the Reference Help for that node...
Defining the Scored Data Set in the Input Data Source Node
You can use the Input Data Source node to represent a scored data set that contains predicted values for the target variable. The scored data set can then be passed to the Model Import node for assessment in the Model Manager or in the Model Comparison node.
A SAS modeling procedure, such as PROC LOGISTIC, or a customized data set can be used to create the scored data set.
This post might help as well:
https://communities.sas.com/t5/SAS-Data-Mining-and-Machine/Help-with-Model-Import-in-SAS-EM/m-p/192154/highlight/true#M2415
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