I created an integration level setting to store the bucked ID for imports and exports using amazon S3. I then put this handlebar expression into the Bucket Name filed on the imports and exports. {{settings.integration.S3OutBucket}}
That expression works fine on exports but on imports it's returning null.
In AFE it works perfectly in both cases. When the flow runs, it's returning null.
Currently there is bug on the S3 imports due to which the custom settings are not working as expected for the fields of S3 import. We would request you to hard-code the strings for the S3 import fields for now.