Minimum dunning amount per dunning letter

Hello,

Is there a functionality existing for the setup of a minimum dunning amount per dunning letter? I.e. we use staged dunning at client site and currently have 2 overdue invoices for a client site:

Inv 1, open amt 11.00, current dunning level 1

Inv 2, open amt 1.00, current dunning level 0

Minimum dunning amount for the client site: 10

Current functionality:

If I generate dunning letters, the client will receive 2 letters:

inv1 -> dunning level 2

inv2 -> dunning level 1

Desired functionality:

I would like to have a minimum dunning amount 10.00 per dunning letter, so that if I generate dunning, client will receive only 1 letter:

inv1 -> dunning level 2