On Wednesday, the government’s press office said:

At this stage, the Bulgarian government believes that the decision not to join the Global Compact for Safe, Orderly and Regular Migration protects to the fullest extent the interests of the country and its citizens.

Bulgaria’s centre-right government stated that it will not be attending the U.N. meeting in Marrakesh next week.

The government plans to vote “abstained” during the final approval of the pact in the U.N. General Assembly.

This is the current list of countries not joining the Pact on 10-11 December in Marrakesh (note though that Switzerland and Italy might join later, if their parliaments vote for the Pact at a later time point):

USA
Hungary
Austria
Czech Republic
Israel
Australia
Switzerland
Poland
Slovakia
Italy
Bulgaria