Hi @vox-terman,
Unfortunately, it is not possible to include the query parameters in the custom permalinks. The main reason of this are the performance issues and the way the custom permalinks are stored (single serialized array with static URIs):
https://permalinkmanager.pro/docs/filters-hooks/how-the-custom-uris-and-redirects-are-stored/
For instance, an URL with just three parameters:
example-page/index.php?abc=123&foo=bar&lorem=ipsum
would generate additional URL combinations:
example-page/index.php?abc=123&foo=bar&lorem=ipsum
example-page/index.php?abc=123&lorem=ipsum&foo=bar
example-page/index.php?foo=bar&abc=123&lorem=ipsum
example-page/index.php?foo=bar&lorem=ipsum&abc=123
example-page/index.php?lorem=ipsum&abc=123&foo=bar
example-page/index.php?lorem=ipsum&foo=bar&abc=123
The algorithm responsible for detecting the custom permalinks will need to duplicate array search functions that could be memory consuming.
Best regards,
Maciej