CSV File Input --> Accept filename from previous step inconsistent

Hello experts,
I am using a Job having Add Files to result step, passing the file name to the subsequent transformations.
In that transformation we use GetFilesFromResult to get the filename, which get passed to the CSV File Input step.
So the observation is :
1> Initially, the CSV File Input Step was configured to read a file from a fixed file, known path. No input was passed to this step.
2> The step was later changed to accept the filename from the above mentioned GetFilesFromResult step.
3> The CSV file input failed with the error - Cannot find filename.
4> We want to know why the CSV File input step initializes without waiting for the results from the previous step.
5> We added a fresh CSV File Input Step, we directly configured it for accepting filename from the previous step.
6> This step works fine.

The 2 instances of the same CSV File Input show different behaviours. Is this inconsistent or we misunderstood its functioning? Please clarify.
Added the snapshot of the transformation for ready reference.

-Thanks and Regards
Yogesh

Attached Images

• TrademarkCSVTransformation.jpg (20.2 KB)