I tried but This also save other folders without any content
Only folders are saved no content under Sub1/*-
*.* !/.BackupIgnore* !/SubFolder_to_The_SisterFolder_To_IgnoreFile/Sub1/ <---- For folder !/SubFolder_to_The_SisterFolder_To_IgnoreFile/Sub1/* <---- For content
Please provide a tree structure of your source starting from root you use for your snapshot. Then indicate what you want to exclude/include and we can try to work out how to do it.
Giving only some partial information makes it impossible to help.
He tried, you didn’t cooperate. What are you expecting? Nobody magically knows what you’re trying to do or why something you’re hiding from us might be broken.