Tvheadend

In my area there are stations broadcasting the same shows. Not sure why this is, FCC changes coming or just backup frequencies for vhf/uhf etc...

2.1
2.2

23.1
23.2
23.3

26.1
26.2
26.3
26.4
26.5

48.1
48.2
48.3
48.4

Disabled 23* and 48* in configuration/channel epg/channels so they don't show up in the Electronic Programing Guide

But I've seen messages in /var/log/syslog about duplicates:
Jul 31 14:35:32 hc2 tvheadend⁶²⁴: dvr: delete entry b5979973b49bf14961b162155263cd21 "The Late Show With Stephen Colbert" on "WBBM-DT" start time 1533612900, scheduled for recording by "192.168.0.102" (duplicate with b5979973b49bf14961b162155263cd21)

Not exactly sure where this is coming from. Should I also disabled configuration/channel epg/epg grabber channels or muxes or services?

Should I disabled any of those that I have disabled in the Electronic Programing Guide? or just leave it. Things get a little hairy for example in the muxes table cause their just frequencies etc (no names). Or are they just going to get repopulated on the next grabber fill?