How do Incremental data loads works?

Scenario
Part 1
If I have a staging table with 10 000 records. Then on the weekly data warehouse run I add 5 000 records giving me a total of 15 000 .
Part 2
I go to PMF Measure Loader and choose Incremental with the metadata with the above table.

Question
Does it read all 15 000 records and do a ON NOMATCH INCLUDE , ON MATCH REJECT??

This message has been edited. Last edited by: malapejohn,

Depends on the Load option you choose:
"Add new, replace actual/target" will add new records, replace the actual/target values of existing records and preserve existing records that are not in your new load (a possibility for you).

"Add new, increment actual/target" will add new records, preserving old records and actually incrementing the Act/Targ values with the values from your load (a possibility for you).

"Add new, replace act/targ, delete old" will delete all records not in your new load, include new records and replace the Act/Targ values with the values from your load.

"Add new, increment act/targ, delete old." will delete all records not in your new load, include new records and increment the Act/Targ values with the values from your load.

The main questions are:
Do you want to replace or increment your actual/target values?
Do you want to retain old records?

Then I strongly suggest reading the available PMF Help.

Add new, increment actual/target" will add new records, preserving old records and actually incrementing the Act/Targ values with the values from your load

This was the option for me . Thanx..
I read the Help as well..