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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Forum: Origin Forum Subject: Message: * HTML is OFF * Forum Code is ON Smilies Hello, some of "my" users reported an issue where data seems to "disappear" from Origin project files (.opju) from time to time. I am trying to figure out, if this is technical issue or "user error" and in either way how to prevent it. What we observe: - Some workbooks/sheets are missing when reopening a project - The project structure is still present, but certain datasets or books seem to be gone - This happens sporadically and is hard to reproduce Environment: - OriginPro 2023 / 2024 - Windows 11 - Project files are typically stored on a network drive (SMB share) We are trying to understand whether this is: - a known limitation or risk when working with OPJ/OPJU files on network drives - or more likely caused by user workflow issues We would like to understand: - whether this behavior is known in Origin - if there are recommended best practices to avoid this - and whether this is considered a technical limitation or user-side misuse Any clarification or guidance would be highly appreciated. Thank you!   Check here to subscribe to this topic.