This one is a really important one and we provide this advice with your best interest in mind. We appreciate it maybe a laborious process to write a new product listing across many different platforms.
But, it is in your best interest to do so.
Organic searching of your listings do not look favourable as it is considered duplicate content.
It is better to provide a shorter, accurate description of your item than simply copy and paste a lengthy one from another of your online stores.