
I usually turn off the XML export (Use automatic Lightwright Data Exchange in the Lightwright Tab of the Spotlight Preferences) in the new file. The new XML will not be linked to Lightwright. When you open the duplicate copy, it will automatically export a new XML file.
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This way the XML file that Lightwright is looking for will not change, and you won’t have to do a full export on exit and re-link Lightwright to the XML file. If you need to make a backup, make a duplicate of the file in the OS using a different name rather than renaming the original. Do not change the name of your VWX file.The Save a Backup command automatically turns off Data Exchange in the backup copy, so it will not interfere with Data Exchange on the original VWX file. Use Lightwright 5’s Save a Backup command to make copies of the LW5 file, but do not Save As.
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For detailed information on the reasons behind this restriction, search the Lightwright Reference Manual for “degree symbol.” Do not use degree symbols anywhere in your Vectorworks symbols-in the name of the symbol, in the default data/information for the Lighting Device, or in the OIP data.

Whatever changes are made when the file(s) are locked will not show up in the XML file. When this happens, the file is likely to be locked and cannot be written to by either Vectorworks or Lightwright. The server may be copying parts of your files at any time. Instead move them to your desktop for work.

If you Save As or rename the VWX, that file will create a new XML so you may end up with Show-Data.xml (in reality Vectorworks will name this the same as your LightPlot, but with the XML file extension).That’s for good record keeping and so you can easily “see” the relationships. You need to keep your VWX, LW5, and XML files in the same folder or directory. Two work together to ensure a smooth workflow, but they are not one product, like the Vectorworks Designer Suite.This is explained again below, but as a critical point, it need emphasis.

Lightwright was developed by John McKernon and not by Nemetschek Vectorworks. I discuss the relationship between Lightwright and Vectorworks at length in Entertainment Design Scenic, Lighting, and Sound, with Vectorworks Spotlight 2013.This is an important excerpt about good workflow, and avoiding Potential issues.
