QUESTION:
Where are the Salesforce Id's for the records I just inserted via MassEffect?
ANSWER:
When MassEffect is in Insert mode it automatically creates a file of the ID's for the records that it created along while also keeping the original data intact.
When MassEffect is in Insert mode it automatically creates a file of the ID's for the records that it created along while also keeping the original data intact.
The file location (of the returned file with ID's) is provided in the MassEffect completion dialog box, but is also by default saved in the same directory as your import file. The file name will be the same as the import file suffixed with a "_IdSave0" (or _IdSave1, _IdSave2 etc.).