Thanks jcl.

To be sure I understand the first paragraph, let's run through a simple scenario:

I start Z1 with $1,000 Capital and M/R set to values that give CR=$1,000. Wonderfully, the account grows to $2,000 ($1,000 Profit).

Now, I withdraw $586 and go have a party in Paris.

But before I leave , I also (manually, not automatically) reTest and change M/R to settings that give $1,414 CR.

Both changes OK & correct?

Re. the 2nd paragraph, true for adding capital, but not true for removing capital, as from a prior answer previous withdrawals are reduced pro-rata according to the ratio of new capital to original capital, correct?

Thanks.