SQL Query stopped returning Data

Say,


Data stored in MySql 5 running on Win7
Since moving it from linux MySql DB the join query below doesn't return data: If I remove the join - tTop10NosByCallType returns data.
Can you explain it and how to solve please?

SELECT
*,
     tDirectory.`CallerID` AS tDirectory_CallerID,
     tDirectory.`Category` AS tDirectory_Category,
     tDirectory.`Access` AS tDirectory_Access,
     tDirectory.`Status` AS tDirectory_Status
FROM
     `tDirectory` tDirectory LEFT OUTER JOIN `tTop10NosByCallType` tTop10NosByCallType ON tDirectory.`TelNo` = tTop10NosByCallType.`No`
WHERE
     tTop10NosByCallType.Client = $P{Client}
     and `Invoice number` = $P{InvNo}
ORDER BY
     CallType DESC,
     CountByCallType DESC,
     DurationHHMM DESC