Automatic Extension Step Renumbering

I was very pleased to see that CC performed automatic Step renumbering for the extensions, and also renumbered return to steps, so that

Main Success Scenario:

1. Step A

2. Step B

3. Step C

Extensions:

3.a Step C extension

    1. System calculates something

    2. User returns to Step 2

Becomes, when a Step is inserted between 1 & 2

Main Success Scenario:

1. Step A

2. New Step

3. Step B

1. Step C

Extensions:

4.a Step C extension

    1. System calculates something

    2. User returns to Step 3

BUT a little dismayed to find that CC increments any number in the Extension: like this

Main Success Scenario:

1. Step A

2. Step B

3. Step C

Extensions:

3.a Step C extension

    1. System calculates factor as Revenue multiplied by 11

    2. User returns to Step 2

Becomes, when a Step is inserted between 1 & 2 (Note the multiplication factor!)

Main Success Scenario:

1. Step A

2. New Step

3. Step B

1. Step C

Extensions:

4.a Step C extension

    1. System calculates factor as Revenue multiplied by 12   

    2. User returns to Step 3

See the 4.1 Step 1 multiplied has also increased by one from 11 to 12

I suppose it's is fairly obvious that it would do that, so maybe this is just a wrning to others not to use numeric digits in the extensions. I presume CC are aware of this issue?

Personally I would put up with a restriction such as having to use a certain format like User returns to Step-3 and be able to use numeric digits, but others may not.