Thank you for purchasing! Some tips in regards to the issue you're having:
- Make sure you are running the latest Lansweeper release, 5.3.0.34. Update instructions can be found here.
- Make sure the unique key (internal ID) of the monitor doesn't change as you're editing. You can see the unique key listed at the top of the page when you hit Edit Asset. The monitor manufacturer and serial are used to compose the unique key.
I do notice that in some cases the unique key uses the manufacturer as stored in the client machine's registry (e.g. "DEL"), while the manufacturer field is set to a more readable manufacturer name (e.g. "Dell Inc."). If you edit the monitor under these circumstances, its unique key will change to include the more readable manufacturer name, resulting in duplicates upon rescanning.
If this is what is happening in your case, edit the manufacturer field to prevent this behavior, using the manufacturer name seen in the unique key. If the unique key of your monitor is Mon:DEL:XXXXX for instance, make sure the manufacturer field is set to DEL and the serial number field to XXXXX. Otherwise, the unique key will change upon saving. I've asked development to take a look at this issue as well, so manually adjusting the manufacturer field won't be necessary in the future.