I am running Lightroom on a Surface Pro with limited SSD space so at one point I switched my default import location to an external MicroSD card. My photo processing took a pretty serious performance hit using this as a location and after a number of months I tired of the performance issue and reverted to putting the imports back on the SSD.
At some point later I noticed that all the folders containing the imports from the MicroSD time period were missing.
Today I found the raws (on that MicroSD) and now I am wondering what would be the least problematic way of getting all these folders back into lightroom. Would I lose any editing data if I (re)import them from the MicroSD?
I am using lightroom CC 2015.12, also I am not a big user of the Metadata if that comes into play.