Backup and Restore copies a model to a sequential backup file and restores the copied model later.
Backup unloads the model from the Host Encyclopedia to a sequential data set. The unloaded model is an exact copy of the model at the time of the backup including any existing subsets and their checkout status.
Restore uses the data in a backup data set to update the model on the Host Encyclopedia. The model is restored exactly as it was at the moment it was backed up including checkout status.
You are not required to use this utility each time you backup a model. Instead, you can save the JCL and make a copy for each model you want to maintain. However, you must use the utility to restore a model so that you can select the preferred generation.
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