On SF, the tag network is remapped to networking. This is since July 16 (done by Kyle).
Now take a look to http://serverfault.com/questions/161850/unable-to-connect-to-the-remote-server migrated from SO to SF after July 16. It's tagged with network.
So I guess the synonyms code to not be run when question are migrated.
Here is something else, I did not test but when you migrate a question from site X to site Y what's append if there was a synonyms on site X but not site Y?
I see two way to implement synonyms system:
- The job is done when displaying the page. If this were the case, my question taken as example should be OK on SF, so I guess this is not the current implementation.
- The job is done when submitting the question. In this latter case, imagine a question tagged ips-firewall on SO, SO communities focus on programming so they don't care about firewall and decided to make ips-firewall, ids-firewall, firewall synonyms. The question on SO will be tagged firewall and so when migrated to SF still tagged firewall while it would be better to have it tagger ips-firewall on SF because SF take care of the difference.