Testing version: 2.1
What were you doing: Importing my Obsidian vault
What feature did you use: “Import from Obsidian”
What happened: Tags from frontmatter got imported including the commas. E.g.:
What did you expect to happen: Comma is a part of the frontmatter syntax. The correct tags would have been:
#source #todo
Hello,
Are those tags recognised in Obsidian? The importer now assumes they are expressed using the following syntax
---
tags:
- content_video
- content_blog
---
If this is the case, yes this should be fixed.
Yes, the comma notation is recognized by Obsidian. I didn’t even know the syntax you mention was also an option. 
I’ve noticed that most/all of my tags in the front matter are being ignored. Mine are formatted as:
Tags: Hardware/Server, Configuration, Unix, Linux
Is the importer case sensitive?