I created a custom module within my sandbox -- i added a relationship Accounts 1 to Many to Polk Module (new custom module). Subpanel from Polk Data is default only - no other options

When i look at other relationships from Accounts for 1 to Many they look like below

My concern is when i go to use CSV Importer I want to link/tie the POLK data records to account by that account number. See in screen shot above it is shows the accounts_polk_polk_data_1 - this is my first custom module and I know I'm missing something.
