Dear fellow DE's and regular forum readers,
Thalys regularly checks their trains to ensure everything is OK and guarantee quality service. However this year all 26 Thalys trains will get an extra thorough maintenance check which means each train will be out of service for one whole week, during which 30 technicians will inspect the train.
In order to secure Thalys' most important connections, several other connections will be cancelled, incl.
For Belgium this means that between 14 July and 25 August there will be fewer trains between from Brussels to Paris and you will not be able to travel by Thalys to the above mentioned Wallonian or Flemish cities.
Alternatively, you can select the ABS (Any Belgian Station, EBS in Dutch) option when buying your Thalys ticket. Like with Eurostar it allows you to travel from Brussels-South train station to your final destination in Belgium.
In autumn, from September till December, there will be fewer trains from Paris to Amsterdam and from Paris to Brussels.
When booking your Thalys ticket you will be informed about these temporary modifications.