Outlook creates new calendar on import?

[inctor]

When double-clicking the ICS file, it opens in Outlook and created a new calendar, instead of importing to the current/default calendar.

If the "METHOD" is set as "REQUEST", it opens the "accept" window and only imports 1 of the events specified, if METHOD is changed to PUBLISH it imports to a new calendar but includes both events.

I remember something about "X-WR-RELCALID", but couldn't find anything in this project about it, nor do i fully understand how it works.

This is the full ICS file contents:

BEGIN:VCALENDAR
VERSION:2.0
PRODID:https://eloomi.com
METHOD:REQUEST
X-WR-TIMEZONE:Europe/Copenhagen
BEGIN:VTIMEZONE
TZID:Europe/Copenhagen
X-LIC-LOCATION:Europe/Copenhagen
BEGIN:DAYLIGHT
TZNAME:CEST
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19810329T030000
RRULE:FREQ=YEARLY;INTERVAL=1;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:CET
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19961027T030000
RRULE:FREQ=YEARLY;INTERVAL=1;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:5b178b10b56c0
DTSTART:20180621T090000
SEQUENCE:0
TRANSP:OPAQUE
STATUS:CONFIRMED
DTEND:20180621T160000
URL:https://eloomi.app/learning/modules/4409
SUMMARY:Onsite Training Test - Onsite Training Schedule - Test User
ATTENDEE;CN=Test User;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED:MAILTO:te
 [email protected]
CLASS:PUBLIC
X-ALT-DESC;FMTTYPE=text/html:Onsite Training Test\nAddress: Gladsaxevej 376
 \, Søborg\, Denmark\nLocation: First Door
ORGANIZER;CN=TestDev:mailto:[email protected]
DTSTAMP:20180606T091944Z
END:VEVENT
BEGIN:VEVENT
UID:5b178b10b5c29
DTSTART:20180622T100000
SEQUENCE:0
TRANSP:OPAQUE
STATUS:CONFIRMED
DTEND:20180622T150000
URL:https://eloomi.app/learning/modules/4409
SUMMARY:Onsite Training Test - Onsite Training Schedule - Test User
ATTENDEE;CN=Test User;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED:MAILTO:te
 [email protected]
CLASS:PUBLIC
X-ALT-DESC;FMTTYPE=text/html:Onsite Training Test\nAddress: Gladsaxevej 376
 \, Søborg\, Denmark\nLocation: First Door
ORGANIZER;CN=TestDev:mailto:[email protected]
DTSTAMP:20180606T091944Z
END:VEVENT
END:VCALENDAR

Is it possible to always ensure it imports to the current/default calendar? It works that way, if you "drag and drop" it in Outlook, but not double-clicking.