At the moment, I’m creating new zettels as txt files in 1Writer,and linking them via their unique titles (very early days for me, both in terms of naming and linking. Naming is the unique numeric code generated from yyyymmddhhmmss plus relevant text description. Linking is via internal markdown (?) links, so [[yyyyymmddhhmmss Relevant description]]
When imported to tinderbox these are currently plain text, not links. I was mindlessly wondering whether there’s a way of doing something with those links on import. But as I say, probably too much thinking - better to focus on creating good zettels, linking in a useful way, etc.