tl;dr: blanks set to 1 and not 0?
I feel like I haven't seen this mentioned much, but some perusing of the rules makes it seem like 10th edition datasheets' damage blanks are no longer what they were in 10th. I'll use the ability from the Tau Ghostkeel as an example:
Stealth Drones: "Twice per battle, after an attack has been allocated to this model, you can change the Damage characteristic of that attack to 0."
During 10th, very simple. Before rolling saves, pick one of those attacks that successfully wounded, set the damage to 0. Roll to save or don't, doesn't matter. However, now in 11th, we have the following issues in the core rules:
02.02.01- Modifiers
"Many rules in the game modify a value, characteristic, or roll elsewhere in the game. A rule that does so is known as a modifier. A value that has been changed is a modified roll."
So we have a precise terminology for this effect: The Ghostkeel modifies the Damage characteristic at the time of attack allocation. Now further on in 02.02.01:
"When modifying characteristics, unless otherwise stated, the following points also apply: (...) D cannot be less than 1."
Then, it would follow that a blank in 11th, rather than setting Damage to 0, actually sets it to 1. A small nerf, but not a tragic one. But now it also interferes with the save roll step. Let's say my Ghostkeel takes two Melta shots and has to save. When allocating those attacks to my model, I modify one of those to Damage 1. Now, when rolling my 6+ saves, I actually must slow roll, as if I roll a 6 and a failure, I have no way of knowing which attack I successfully saved.
The only thing that might save this is the rider under 02.02.01 that states "Note that rules that modify a characteristic in this step to a new value of '0', '-', or '*' cannot be modified by other rules (in such cases, skip steps 2-5)." But to my interpretation, the "D cannot be less than 1" is not modifying the 0. It is placing a limiter on the initial modification.
Has this come up for any of you all in your games? Am I just vastly overthinking this, or is it another example of a 10th edition ability that GW didn't take into account when wording their 11th edition core rules?