In iframe code, lg.php is not called. Is this normal?

[firstimpression]

When a zone is delivered with an iframe invocation code (afr.php), I see that lg.php is not called. 

What am I missing, is this normal, that only requests are counted? 

Thank you.

[Erik Geurts]

No, this is not normal. The lg.php program logs impressions, so it should be part of an iframe invocation code as well. Or have you perhaps disabled impression logging?

[firstimpression]

Thank you for your reply. In the end it was something that I edited in Revive's core code.
Just wanted to confirm that it was an incorrect behavior.