Valhalla - Merged file of non continuous areas

[blaurent49]

Hello !
I tried to install Valhalla on my own server based on a merged file including Europe + some french islands (Guadeloupe, Martinique, La Réunion and so on).
The computation of routes works fine in Europe but not in the islands.
How can I solve this ?
First of all, is the use of a merged file is the proper way of reaching my goal? Can Valhalla build the tiles on a set of .pdf files instead of merged single one? What is the best process?
Can I add new tiles on the current installation (risky ?) or should I start again the whole process?
Thank you in advance for your help.
Benoît
PS : the merged file is also used by Nominatim and it works fine. The file thus contains data from the french islands.