Importing events using ICS file

Whenever I import an ICS file containing events, it corrupts the locations specified for the event, but not in all cases.This means I have to manually go into each event (52 events) and re-setup the location, which is a pain.

This is a snippet of the import file:
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//VueSoft//CsvToIcs//EN
X-WR-CALNAME:Breakfast List
X-WR-RELCALID:1eaa9ee6-3cde-430d-9eb0-74d63d7cbd9a
X-WR-TIMEZONE:UTC
BEGIN:VTIMEZONE
TZID:GMT Standard Time
BEGIN:STANDARD
DTSTART:20181002T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYHOUR=2;BYMINUTE=0;BYMONTH=10
TZNAME:GMT Standard Time
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
END:STANDARD
BEGINAYLIGHT
DTSTART:20180301T010000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYHOUR=1;BYMINUTE=0;BYMONTH=3
TZNAME:GMT Daylight Time
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
ENDAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Breakfast
DESCRIPTION:Tennis Breakfast
DTEND:20200105T110000
DTSTAMP:20190926T173017Z
DTSTART:20200105T090000
LOCATION:Tennis Club
PRIORITY:0
SEQUENCE:0
STATUS:Confirmed
SUMMARY:Tennis Club Breakfast
UID:1cf9e7bd-83d3-4c91-80f7-b8803e16e5ec
END:VEVENT
END:VCALENDAR