Duplicator not working in MarketPress

Last year in April, I faced an issue where I was not able to duplicate the MarketPress products along with its variants and had created this thread (https://premium.wpmudev.org/forums/topic/how-can-i-copy-a-marketpress-product-keeping-all-variations)

It was solved then, but I lost this implementation due to some reason and now I cannot duplicate the products with it variants again. Because of this I am unable to use the variants with MarketPress for Events+.

Please assist.