PBCS Data Load via Data Management - Ignore Errors?

Hi - loading data via DM into PBCS. It seems that a single error (for example, member does not exist) will cause the whole load to fail, no data loaded.

Ideally I would like to load the rest of the data file, even if there are only one or two members not set up.

However I cannot find a setting that will allow this. ETL tools normally have setting like "ignore errors", "fail after n errors" etc. This is particularly annoying as we normally clear data before loading.

Can anyone point me in the right direction as to what setting are available to ignore errors, or any workarounds to achieve this?