Import Lead Response Status Messages

When a query is made to check the status of a bulk import, I have observed following status messages sent back -

• Importing
• Queued
• Complete.

Are there any other messages possible ? Since I couldn't find any documentation around these, I have been capturing these based on my testing. Just dont want to miss any unknown scenarios in my implementation. Appreciate the response or pointer to a detailed documentation.

Regards,
Vasu

Thanks,
Vasu