Hi Ivan,
Run the following select on Dev and STAGE dbs and compare the results:
SELECT [KeyName], [KeyValue]
FROM [CMS_SettingsKey]
WHERE [KeyName] in ('CMSDataVersion', 'CMSDBVersion', 'CMSHotfixDataVersion', 'CMSHotfixVersion')
If they are different, then there might have been issues with SQL patches you installed.