I'm going to go with "No".

Or they would have been written that way to begin with.  

We try to maximize compatibility with lowest known tested version as much as possible.  Possibly what we should do is adjust the fLevel on those signatures.

On Feb 20, 2020, at 12:11 PM, 99r c via clamav-users <clamav-users@lists.clamav.net> wrote:

is there anyway to transform the new definitions  so that they are usable by older installations.