...

Compatibility, Deprecation, and Migration Plan

...

The new configuration property in this proposal is backward compatible, so any existing connector configurations that use the MaskField SMT will continue to work as-is with no behavioral changes. To use the replacement feature, such existing connector configurations will need to be modified to add a new `replacement` property.

Rejected Alternatives

First version of the improvement, proposed in the PR, used JSON map of maskField → replacement, this approach had both pros and cons:

...