In this case I only need to archive those sessions. The question is: if I archive a session while in safe mode, will it preserve all the plugin information? In theory the fact that plugins are temporarily disabled shouldn’t affect the archive process - all the plugin settings and plugin automation are there in the session. But I’d rather ask to be sure.
Yes, but any external data use by a given plugin may not be included. eg. Soudfonts or Impulse Response files could be lost.
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Archiving basically performs a “save as” and the zips up the result.
At save, Ardour asks plugins to save files loaded by a user. A plugin then either copies or links those files to the session folder, or serializes them in the session file.
When saving using safe-mode, the plugin is not available to copy/link files to the archive. Only if the data was already serialized in the .ardour session file it is copied as-is.