@smustgave comment #20 proposed modifications make sense.
I'm unfamiliar with the Drupal development workflow and I just cannot figure out how to commit to the issue branch; all the docs I can find create new issue branches.
Hence, here is a patch implementing comment #20 changes.
Please consider porting this fix to Drupal 10 too as it has the same issue and the same modifications do work.
Running the official 1.0.1 version.
I hit the same problem as the original poster, where hooks aren't disabled, and only become disabled when commenting the if clause in alter(). It appears though the disabling only happens for the first item in a migration — alas, hooks run for all the other items.
Hence I would gladly test the 1.0.x-dev version that seems to fix the issue.
But real life means I'm stuck with drush version 12. Customer hosting currently will not upgrade post PHP-8.2 — drush version 13 requires PHP-8.3.
I'm quite glazed-eye when looking at the code, could you please tell me what part of the patch requires drush version 13, so that I can find a workaround, and perhaps submit a patch to make migrate_boost compatible for crusty old environments such as the one I have to deal with?
Thank you,