Campaigns: Has the TARGET_TYPE changed from Contact to Prospect for campaign send after 7.13.4?

Hi

I have just upgraded from 7.13.4 to 7.14.4.

I am using EXTERNAL/CUSTOM campaign tracking files , so I need to code for the various tracking_targets.

I have noticed at least since 2014 the target_type was ALWAYS set to “Contacts”, since the upgrade to 7.14.4 it is set (by default) to “Prospects” - stuffing up my coding.

How can I change the (default??) target type to “Contacts” while sending campaigns?

I checked everywhere in the admin setting ANd while creating a NEW campaign.
I am unable to change the “target_type” to Contacts.

Any help very much appreciated.
Thanks