I have Opus v9, and is having a hard to change the zip file content.
After Dopus opens up a zip file, I try to make some simple change to a text file. Saved it. No error message of any kind. However, the change is not there when I open the same text file again.
Is this the proper way of doing this ? or I have to do it the regular way using WinRAR.
When you double-click something in a zip file it is extracted to a temp directory and then that temp file is opened.
Once you're done viewing (or editing) the file, it will be deleted. Any changes made will be lost. To update a file in a zip you should extract it somewhere, edit it, then copy it back into the zip.
Opus doesn't check for changes and then update the zip file.
Opus does have such a feature for FTP sites, but not for zip files. (Settings -> Preferences -> File Operations -> Options: Re-upload modified files...) If you want something similar for zip files you could write to GPSoftware and see if they can extend the FTP feature to work with zips.