Hi P38,
Welcome to the Sony Community!
Since you're using a new device, the program will read the files as new ones that haven't been imported to the computer before. To copy the files you want to import, click the Select Files to Import option on the Import page and highlight the pictures. Press the Import tab to copy them to the computer.
I recommend deleting the files from the smartphone so as not to accidentally import the previous pictures to the computer. You can also delete the files after import by highlighting them, right click and press delete.
If my post answers your question, please mark it as "Accept as Solution". Thanks_Mitch