After performing an Interference Detection scan with all EAPs selected and then viewing the detailed results in the controller interface, all the records are not being displayed as one would expect.

In my case, a scan was performed with 5 EAPs resulting in a total of 309 records.  In exporting the results to a CSV or XLSX file, all 309 records are listed.  However, when viewing the results in the controller interface with All AP selected, only a total of 90 records are displayed instead of 309.  

A closer examination of the displayed records with the available selections revealed the following:

Furthermore, when selecting All AP, it was discovered that only one instance of each Name/SSID + BSSID combination is listed.  If the combination is detected by more than 1 AP, then only one record is shown.  Additionally, the record that is shown is not necessarily the one with the strongest signal but rather appears to be the first one detected. One would think that all detections should be listed with All AP selected, otherwise there is no way to compare detections without examining each and every other EAP.

Another problem is that the exported CSV or XLSX file contains many duplicate entries.  It seems that the single instance Name/SSID + BSSID combination in the All AP display is being stored as an additional record apart from the record stored for the respective EAP.