Allow the idlist option to work on the primary ID of source plugins containing multiple IDs

Attach a static patch for the issue.

+++ b/src/Drush/MigrateToolsCommands.php
@@ -1053,7 +1053,7 @@ class MigrateToolsCommands extends DrushCommands {
         }

+++ b/src/SourceFilter.php
@@ -130,4 +215,54 @@ class SourceFilter extends \FilterIterator implements MigrateSourceInterface {
+      $method = new \ReflectionMethod($map, 'getIterator');

I don't see where we call getIterator. I'm missing why this is needed.

Not sure if it's worth merging the 5.x ✨ Allow the idlist option to work on the primary ID of source plugins containing multiple IDs Needs work and 6.x issues together.

But the same feedback has been addressed here

Can we add some of the "why as comments into the code so we will remember why wacky is needed?

Added a rebased patch targetting 6.0.x.

And sorry for the lack of update on this, but haven't had the time to implement the feedback.