Combining data from page page with the child page

I am trying to combine data from the parent page to the child page. The parent page shows the "Last Sold Date" and the child page has all the other relevant data which I want to scrape. When I scrape the data, it naturally scrape the parent page for the "Last Sold Date" and then all the child pages. I need to know how to let Web Scraper know to combine the data. First time using this, and have looked through the documentation and FAQs but couldn't find answer. Appreciate any help.

Url: | eBay

Sitemap:
{id:"sitemap code"}
id:testingcapturinglastsolddate
Sorry I don't really understand what this Sitemap is about.

Try this:

{"_id":"ebay-last-sold","startUrl":["https://www.ebay.com.au/sch/i.html?LH_Complete=1&LH_Sold=1&_udlo=50&_udhi=2000&_fss=1&_saslop=1&_sasl=deliveryscape&LH_SpecificSeller=1&_pgn=1"],"selectors":[{"id":"Result elements","multiple":true,"parentSelectors":["_root"],"selector":"li:nth-of-type(n+2) div.s-item__wrapper","type":"SelectorElement"},{"id":"Last Sold","multiple":false,"parentSelectors":["Result elements"],"regex":"","selector":".s-item__title--tag span.POSITIVE","type":"SelectorText"},{"id":"Click Product","linkType":"linkFromHref","multiple":false,"parentSelectors":["Result elements"],"selector":"div a.s-item__link","type":"SelectorLink"},{"id":"Seller","multiple":false,"parentSelectors":["Click Product"],"regex":"","selector":"div.x-sellercard-atf__info__about-seller","type":"SelectorText"},{"id":"Feedback","multiple":false,"parentSelectors":["Click Product"],"regex":"","selector":"div a:contains('% positive')","type":"SelectorText"},{"id":"Price","multiple":false,"parentSelectors":["Click Product"],"regex":"","selector":".x-price-primary span","type":"SelectorText"},{"id":"Condition","multiple":false,"parentSelectors":["Click Product"],"regex":"","selector":"div.x-item-condition-text span.ux-textspans","type":"SelectorText"}]}

Structure:
image

Thanks for this. Do I need to have the paid version to do this. I don't see anywhere in the webscraper where I could input this.

Thanks I figured how to use your inputs. It works.
Cheers.