$vbseo_custom_char_replacement wont work

After 3.1.0 upgrade Turkish characters in $vbseo_custom_char_replacement wont work.
You can see links with missing characters here Webmaster Forumu - vBulletin

This is what I have in my config_vbseo.php
$vbseo_custom_char_replacement = array( 'ý' => 'i', 'Ý' => 'i', 'þ' => 's', 'Þ' => 's', 'ð' => 'g', 'Ð' => 'g', 'ü' => 'u', 'Ü' => 'u', 'ö' => 'o', 'Ö' => 'O', 'ç' => 'c', 'Ç' => 'c');

After reading more posts I found the answer.
After "Replace Non-English Characters in URLs" option set to "Replace" it worked.