CSV Import Process performance is now optimized where a user experiences seamless capabilities to freshly import and/or create a copy of the existing taxonomy structures having up to 20K nodes.
Error and alert handling mechanism of the Import/Update process is now tweaked. Now, the previously displayed Invalid Node Association alerts in the Pre-Summary Report appears as an actual error in the process. Thus, making it mandatory to make changes in the file for further attempts.
Here is the recommended Do's and Don'ts document for the seamless CSV Import/Update.