When you figure out how to do it - I raise a flag and suggest you reconsider....
E1 does a lot of validation on the Apps and UBE side - before it, generally, inserts/updates the record. That validation goes against UDCs, Data Definitions and Additional Setup.
Inserting through either SQL or Toad has caused numerous clients - days to resolve... Just make sure you know your data! I can share a story - but it took weeks to resolve (every time we fixed the data, the user would update through TOAD, again)....
Things to consider:
* Insert is only for Empty Tables?
* Append is for tables with Data Already in them
* Unicode Conversion may be an issue with the use of TOAD