Connect Navision 2009 (custom tables) with NAV 2017

In 2009 a custom made - let’s call it an - aviation add on has been developed during nearly 10 years. This add on will not be migrated to NAV2017 but instead both NAV versions will be Live from next month.

The 2009 will be used for the add on only and the NAV2017 for WMS and Financial reasons. Now the question; what’s the most efficiënt way to keep one or several tables synchronised for Jet Reports reasons. Is it a job queue with and xml port or is there another solution without weeks and weeks of development time?

If more info is needed → shoot :-).