Wow, it super cool to see that you already have an automated import
process :)
Things I could spot within 20 minutes of browsing through it:
- Redmine issues are sometimes referenced with '#' and sometimes
  without. For example:
  
https://0xacab.org/intrigeri/redmine-import-1/issues/17227
  Without: Original created by @sajolida on 17227 (Redmine)
  With: Blocks #16711
  I wonder whether it might make it harder to use the internal search.
- The color scheme of some tags is not accessible. For example white on
  neon green (definitely) and white on orange (probably). But I guess
  that's easy to change afterwards :)
- I don't understand the labels that are only numbers (eg. 165) and they
  lead to empty lists. For example:
  
https://0xacab.org/intrigeri/redmine-import-1/issues?label_name%5B%5D=165
- Some embedded images are broken. For example:
  
https://0xacab.org/intrigeri/redmine-import-1/issues/17068
-- 
sajolida
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