Importing web site on DB without deleting existing tables

Hi,
I’ve been using your plugin for a long time.
I have a question about the import. During the installation steps, in step 2 there is the field Action that permit only to create new database or remove all data from an existing one.
There is the possibility to import the web site into an existing DB simply changing the table prefix without deleting the tables?

Thanks in advance
have a good day