Manually adding a blade is a bit more complex than just checking them as enabled. For one, you won't get them added to the rare blade list/won't unlock their awakening scene for viewing (that needs to be done in flags and can be hard to find)
You need to also set the "creator" (who the blade will be bonded with) and optionally the time the blade was awakened (clicking "set to current play time" is enough). To avoid further bugs, you need to also go to the selected Driver and make sure they have Greataxe arts set/unlocked (since T-elos is a Greataxe type blade). This is harder to add if they did not already awaken a different Greataxe blade as generally by the time you awaken rare blades you're already high enough level to have all 4 arts slots unlocked - but the editor only lest you set/change the 3 currently equipped arts and not the 4th in reserve/not selected for use.
That said, its generally much easier to just let the game generate the blade for you - but even with the cheat to guarantee a rare blade when using Legendary cores, which rare blade you get will still be random from the remaining ones you haven't awakened (and since T-elos and the Torna blades are locked behind the NG+ flag, none of them will be in the pool at all)
If you don't mind 'restarting' again,
I have some NG+ saves prepared to basically be a normal new game run (no unique enemies killed, field skill checks were bypassed so other was no need to awaken any blades from core crystals other than Roc and the Nameless Core Crystal. Similarly no side quests were done/no items were bought and area ranks/items/exp/story blade affinity charts/etc. were all reset to be the same as a standard New Game, except on the "++" save where much of it is set to max in case you want to avoid some of the grind). The only hard difference is that the Wind Knuckles from the Nameless Core Crystal will be a predetermined build instead of randomized (I have a 4-crown rarity one set with basically a 'perfect' legal affinity chart, but it can be edited like any other common blade or copied from your old save after being awakened on both saves). Having used the saves myself, I will warn you there is one catch to using it that needs a minor edit (I found it too long after uploading the saves to change the files uploaded, but its a super easy fix) -
detailed here.In any case, this will let you awaken T-elos normally due to the NG+ flag and won't have the normal problems that come with activating the NG+ flag on a normal save
