When importing to Assets, is there a way to import to NOTES and append the new data without removing the history. Thank you.
If you mean by keeping the current notes within an asset, and append to them via an import. First export the assets, then copy and paste those details into an import template, add your additional notes, then import. You can use the asset number as key sync field, or serial number to ensure you import and merge the correct assets.
If you mean Asset History, e.g. under the Asset History tab, those details always remain (unless you delete the asset), but don't show the changes for an import other than that an import was taken place, when and by who.