strange notification when updateing EPG

When running a update on a existing XMLTV EPG, it get al lot of these notifications:

[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 00:10:00 stop = 13/10/2017 00:25:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 00:10:00 stop = 13/10/2017 00:20:00 title = NOS Journaal
[  Info  ]       Replaces ----- start = 13/10/2017 00:20:00 stop = 13/10/2017 00:42:00 title = NOS Journaal
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 00:25:00 stop = 13/10/2017 00:45:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 00:20:00 stop = 13/10/2017 00:42:00 title = NOS Journaal
[  Info  ]       Replaces ----- start = 13/10/2017 00:42:00 stop = 13/10/2017 03:55:00 title = Tekst TV
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 00:45:00 stop = 13/10/2017 03:55:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 00:42:00 stop = 13/10/2017 03:55:00 title = Tekst TV
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 03:55:00 stop = 13/10/2017 04:10:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 03:55:00 stop = 13/10/2017 04:10:00 title = Nederland in Beweging
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 04:10:00 stop = 13/10/2017 04:30:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 04:10:00 stop = 13/10/2017 04:30:00 title = MAX Geheugentrainer
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 04:30:00 stop = 13/10/2017 04:35:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 04:30:00 stop = 13/10/2017 04:35:00 title = NOS Journaal
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 04:35:00 stop = 13/10/2017 04:40:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 04:35:00 stop = 13/10/2017 04:40:00 title = NOS Journaal
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 04:40:00 stop = 13/10/2017 04:45:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 04:40:00 stop = 13/10/2017 04:45:00 title = NOS Journaal
[  Info  ]    epg correction : 
[  Info  ]  CHANGED show corrected,
[  Info  ]       show with ---- start = 13/10/2017 04:45:00 stop = 13/10/2017 04:50:00 title = WG.common.xmltv.Title
[  Info  ]       Replaces ----- start = 13/10/2017 04:45:00 stop = 13/10/2017 04:50:00 title = NOS Journaal

however, the output guide does not seem affected/still looks good?

the run of each channel end with:

[  Info  ] 1.55 sec/update
[  Info  ]    Summary for update of       NPO 2 HD
[  Info  ]      missing shows added       0
[  Info  ]      changed shows updated     219
[  Info  ]      new shows added           44
[  Info  ]      unchanged shows inspected 10
[  Info  ]      total after update        317

[  Info  ]      elapstime / updated show  1.56 seconds
[  Debug ] 

so, the original guide info is not restored or something like that...

is this normal behaviour?

Regards, WBMK