Keep old post ID and old comment_ID?

Hello,
Is there possibility to keep original post and comment ID upon import? I didn’t find a way to do this with your plugin. I asked the same question via support form on your website, expressing a desire to buy Pro version (if this is possible with Pro), but 7 days later, still no answer from you. Please could you explain how to link comments with posts without hacking the plugin and the database?

I solved first part of my problem with “Really Simple CSV Importer” (plugin in repo). I used Really Simple CSV to import posts, retaining original IDs. There is no fancy mapping there, but with little bit of tweaking csv column headers, everything run smoothly. After that I was able to import comments with your plugin (keeping proper relations with posts).

Next problem is nested comments.
In order to keep nested/threaded comments (link nested comments with its parent comment) we need “comment_parent” column. But this column is missing. I found that it is fairly easy to add it in “modules/comment/action/actions.php”. But again, to establish relation we need ability to keep original comment_ID. Unfortunately this is also not possible.
To solve this problem I imported “comment_parent” values in “comment_author_IP” column and later wrote a mysql function to copy values into comment_ID.

So, lots of hacking to achieve something that plugin bearing the “Ultimate” in its name should have out of the box 🙂 Kidding, plugin is great, but really, are you planning to incorporate the ability to retain the original ID for posts and comments in upcoming versions?

https://wordpress.org/plugins/wp-ultimate-csv-importer/