Implications of a common private keys directory in 2.1

[Carola Grunwald]

Hi,

my next problem with 2.1.15 on Windows 7.

I add a pub/sec keypair to two different keyrings
  '--import ... --keyring a.kbx', then '--import ... --keyring b.kbx'.
Following this I delete that key from one of the keyrings
  '--delete-secret-and-public-key ... --keyring a.kbx',
which unfortunately as a side effect also removes the secret key
associated with the other public keyring (b.kbx), as for both public key
items there's only one single secret key file stored in the common
private-keys-v1.d directory.

Is there any chance to get that disentangled, maybe by defining a
separate secret key directory for each public .kbx keyring in use?

Kind regards,

Caro