If your organisation has changed rules over the course of the year/in the past, previous member IDs that a member has had will be stored in the members history within their profile. To view this:
1. Click on the drop down arrow against MEMBERSHIPS > click on MEMBERS.
2. Search for the relevant member.
3. Click VIEW against their name within the member list.
4. Scroll down to the MEMBER ORGANISATION INFORMATION heading > click the drop down arrow against their organisation.
5. The memberID field will be visible under the MEMBER IDS heading section of the profile.
6. Click VIEW HISTORICAL IDS.
These IDs will appear in a pop up box.