You should be able to accomplish this with Pipelines, you'll just need a button that toggles some trigger field to start the process. Alternatively, you could have the button start the process by copying the Parent and give the user another button to import the child records, using the Table to Table import process. Neither is 100% ideal, but they're both reliable.
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Blake Harrison
bharrison@datablender.io
DataBlender - Quick Base Solution Provider
Atlanta GA
404.800.1702 /
http://datablender.io/------------------------------
