Due to unfortunate circumstances, I had to interrupt my trip and used both my inbound/outbound travel days to The Netherlands.
When I want to resume my trip from my home country, I can use my Dutch subscription until the border. However, how does it work with Interrail? Can I use my pass starting at the border, or at the first station after the border?
In other words: Do I need to buy a supplementary ticket from the last Dutch station to the first non-Dutch station? Or do the two different train cards merge seamlessly?