does remedy mid-tier 6.0 support macro?
if not, is there a way that this said macro would be converted to active link other than doing it manually?

This is a Mid-Tier limitation.

In the admin tool version < 7, you should have a tool to convert macro to native active link actions.

is there a tool to convert that macros into active links?

It's a part of the admin tool, but only in certain versions as Vincent pointed out. The 7.x tools have it removed.

Good luck!