The HWClassicMaps_Reference.zip file you have requested: Modifications / HW Classic Rebalance / HW Classic Maps Reference Sheets - 4.65kb is not available. Perhaps try browsing all files for the game Homeworld 2 and upload any files you want to share or are missing. This is the only information we could locate:
Inside is a an HTML chart listing the races each player must choose when playing the maps with the Start With setting set to HW1 Map Default. This is not necessary when playing using the other modes.