I want to use the Data Migration tool because of the size of the file.

However, I do not see the Skip option using the DM tool versus using the standard import.  I tried a small sample with the DM tool and it leaves me with duplicate accounts.  Do not want that.

Also, once the accounts are in and I bring in the contacts using the DM tool, will the contacts be attached to their accounts, as they would in a manual import?

Does anyone have advice on this?

Thanks.