OME Discovey range

Hi,

I added several discovery ranges containing just single host using hostname - This was just initally to run some tests.

I then added a few more across our other sites for testing.

After concluding testing I started adding ranges in blocks if 50 IP adds. I then started removing the single host discovery range and all seem to have deleted fine however I have 5 that just wont delete - Any ideas?

Thanks

Jikesh