OIC - Iteration showing 500 while activity is missing last two Iterations

Fetching records from sftp and putting into Object Storage. below is the Integraiton follow

1 - Get the file pattren from sftp configuration file (GL*202404*.csv )

there are 12 Pattrens

2- Get list of file against that pattren ( specified to pick only 500 files )

suppose to run 12 times and fetch 500 files.

3- Read the file

4- Put into Object storage

Actually behavior , It processes records against first pattren

1- Processed 500

2- showing processed 500 in the main activity stream of the integration whereas details shows only 498

But it is showing only 498 in the activity stream missing 499 and 500