Troop 90 is always available to help Cub Scouts as they cross over to Boy Scouts.  Contact the Troop 90 Leadership if you would like to arrange for members of Troop 90 to attend your Pack's Arrow of Light ceremony.

From Scouting.org:

The passage from Cub Scout pack to Boy Scout troop should be smooth, with no time lost in between. By the time Webelos Scouts are ready to cross over, they and their families should be familiar and comfortable with the youth and adult leaders of the troop, their role in the troop and troop activities, and feel excited about beginning this new adventure. The Webelos Scout's graduation ceremony should clearly signify his transition to a new level of Scouting, and could include the presentation of his Arrow of Light badge, a Boy Scout Handbook, and a troop neckerchief.

A Webelos Scout who has earned the Arrow of Light rank has now completed all the requirements for the Scout badge and may join a Boy Scout troop.

The key factor to improved Webelos transition is the ongoing working relationship of the leaders of a Cub Scout pack and a Boy Scout troop. Ideally a community organization would have both a pack and a troop with leaders who work together to help move Webelos Scouts into a Boy Scout troop the same way schools move students from elementary school to middle school.