How to INSERT INTO Table with SELECT and auto incremented field - sql-server

Question

I am trying to insert from a table I created into a production table - I was able to do this earlier with a formula that I think caused duplicates and did not populate the primary key(In this case PROSPECT_ID properly. Since it is an auto incremented field and I am using a select from another table to INSERT any help on how to properly auto increment this field in production? MKT_PROSPECT
INSERT INTO MKT_PROSPECT(PROSPECT_ID,RECORD_TYPE,search_name,LABEL_NAME,FIRST_NAME,LAST_NAME,CUSTOMER_CLASS_CODE,CUSTOMER_STATUS_CODE,COMPANY_NAME,JOB_TITLE,FORMATTED_DETAIL,ADDRESS_1,ADDRESS_2,CITY,STATE,POSTAL_CODE,ADDRESS_TYPE_CODE,ADDRESS_STATUS_CODE,HOME_PHONE,EMAIL,ADDOPER)
select PROSPECT_ID,RECORD_TYPE,SEARCH_NAME,LABEL_NAME,FIRST,LAST,CUSTOMER_CLASS_CODE,CUSTOMER_STATUS_CODE,COMPANY,TITLE,FORMATTED_DETAIL,ADDRESS1,ADDRESS2,CITY,STATE,ZIP,ADDRESS_TYPE_CODE,ADDRESS_STATUS_CODE,PHONE,EMAIL,ADDOPER from dbo.prospects
where SEARCH_NAME IS not NULL and LABEL_NAME is not null

Answer 1

If you would like to insert into a table with a specific ID use IDENTITY INSERT ON as John Hartsock said in the comments. It is worth noting that the auto increment column will continue all other inserts (outside of the scope of the Identity Insert) above the largest number.
If you meant to insert and have the table auto generate you just don't include the ID column in the insert:
INSERT INTO MKT_PROSPECT(RECORD_TYPE,search_name,
LABEL_NAME,FIRST_NAME,LAST_NAME,CUSTOMER_CLASS_CODE,
CUSTOMER_STATUS_CODE,COMPANY_NAME,JOB_TITLE,
FORMATTED_DETAIL,ADDRESS_1,
ADDRESS_2,CITY,STATE,POSTAL_CODE,
ADDRESS_TYPE_CODE,ADDRESS_STATUS_CODE,
HOME_PHONE,EMAIL,ADDOPER)
select RECORD_TYPE,SEARCH_NAME,LABEL_NAME,FIRST,LAST,
CUSTOMER_CLASS_CODE,CUSTOMER_STATUS_CODE,COMPANY,TITLE,
FORMATTED_DETAIL,ADDRESS1,ADDRESS2,CITY,STATE,ZIP,
ADDRESS_TYPE_CODE,ADDRESS_STATUS_CODE,
PHONE,EMAIL,ADDOPER from dbo.prospects
where SEARCH_NAME IS not NULL and LABEL_NAME is not null