No matter if you are importing new records or updating existing records, only one field value is used to match records in the import file with any existing records.  Use the Import ID for the Budget Scenario template.

Notes:
  • Before you can import new records for Budgets, you must first create a Budget Scenario template.
  • To avoid complications when importing, we recommend you use a Budget Scenario ID that does not include hyphens. If you budget across fiscal years and need to use hyphens, you must import using the Budget Scenario Import ID.
Also refer to:
How to locate Budget Scenario Import ID 
How to import into the Financial Edge 7 

For additional information regarding importing budgets, please refer to the General Ledger Imports section in The Financial Edge Import Guide (PDF).