Fixes https://github.com/spring-projects/spring-integration/issues/8566 Turns out some SFTP servers are strict enough to not let to append into existing file if we don't give in addition a `Write` open mode flag as well **Cherry-pick to `6.0.x`**
Fixes https://github.com/spring-projects/spring-integration/issues/8566 Turns out some SFTP servers are strict enough to not let to append into existing file if we don't give in addition a `Write` open mode flag as well **Cherry-pick to `6.0.x`**