Network export not populating most vendor names

Gadge75

Using the App (android) i'm able to scan the network and retrieve all devices and vendor names.  I would say 95% are successfully populated with the others being unknown devices.  When I export the list I'm missing almost all but maybe 7 or 8 vendor names even though the app is showing them all.  The is out of a list of 202 devices.  Is there a setting i'm missing?  Does the app group vendors by MAC and only display the first in that group?  I had no problem with exporting a year ago.  This has apparently started within the last few months. 

Thanks for any assistance you can give.

rooted

You mean in your export the Vendor list is mostly empty and not showing like this?