if you re-run the import all depends the parameters you choose.
All tables will be try to import but you will get errors "table exists" (you can use ignore=y).
If in the logfile you see only a few tables left to import you can use tables=(table1, table2, ......). if you have a lot i would recommend drop schema and recreate again (fromuser= xxx touser=yyy)
Please make sure you DO NOT specify the ignore=y option when doing the reimport or else the data would anyways be written to the table (unless there is some constraint error that stops it). On not giving ignore=y, there would be object creation errors and no data would be imported.