Thanks for the kind words and for your question. You can use a Content Template in the Bulk Edit area to update the Description area. The existing Description is available as a data source you can use in the template. For example, you can enter something like this:
template:([+post_content+]) - my key phrase
That will preserve the current Description value and add the (literal) phrase ” – my key phrase” to it. Note that the new phrase becomes part of the updated Description, so applying the template two or more times to a given item will duplicate the added phrase.
I am marking this topic resolved, but please update it if you have problems or further questions regarding the above suggestion.
Perfect! Thank you for answering this and also the earlier questions I had. Great support!