I dont know is orignally will make like this or is bug, when I upgrade my wyvern armor to draconic armor,
it lose all the upgrade in the armor items (wyvern level)
I checked the upgrade ingredient for both type of armor is same, why is the upgrade will lose after fusion crafting?

version: 1.10.2-206.157

If you are using the version you say they should be kept. Can you please give me your log.

@brandon3055 also, is it normal that you will also loose all enchantments on tools after upgrade?

Well, my sword kept it's Wyvern level upgrade (damage) when I upgraded it from Wyvern to Draconic but the armor lost the Wyvern level upgrades (shield recovery and shield capacity) when I upgraded them to Draconic. So I am just cheating in the ingredients as I am counting it as a bug. >.<

I can confirm also that in SF3.0.4, you lose the upgrades when you go from wyvern to draconic

Is the logs file that owner want is come from the logs folder in minecraft folder?

2017-01-06-1.log.gz
2017-01-06-2.log.gz
2017-01-07-1.log.gz

I replicated the problem again using creative mode.
I think this is the log file you want:

fml-client-latest_2.txt

Can confirm the loss of upgrades with version 1.10.2-2.0.6.157 (currently used by SF3) on upgraded Wyvern Armor, the weapons work just fine and keep their upgrades as intended.