The following points describe miscellaneous comments related to Migration Import.
All migration requests can be exported at the same time. On the import side, however, you should consider importing, reviewing, and applying an entire file/data set before moving on to the next one. The reason is that if objects are included in more than one file, two sets of "inserts" will be generated, but only the first will succeed. The second will cause an insert error on the object, and the transaction would be marked with status "Error Applying". If instead you wait until the first file is applied before importing the second, the second data set will not generate any SQL for the object, since it has already been inserted. It's a matter of efficiency: If you first import all files and then try to apply all, you'll have to identify the duplicated object as an error and then mark the object as rejected before applying the transaction.
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