Is entering Books in Bookmooch via search field really important?

I have some Enid Bloyton books here which I want to give away. When I entered them into the search box I got results. But unfortunately they were the wrong year, the wrong publisher, the wrong binding or a combination of these. So I added them manually. But put in the ISBN in the assigned field. With the result that bookmooch used the Amazon data associated with it. *sigh* So I put them again and left the ISBN field blank. My question is the following: It's fairly strongly hinted by Bookmooch that it's a but idea to not use the ISBN/search field, but entereng a book per hand. Are there any let's say negative consequences, does anything not work the way it should when you add a book manually? Or put the other way round: Would it be ok to enter the books via the search box and correcting the differences in the condition notes? Because especially in a case where more than one of the above mentioned details are different that feels somehow like cheating.
By the way, I'm Leseguenni on Bookmooch as well.

I would do it via search and just note the differences in the condition notes. Way less work!

Two possible solutions:

Use a different Amazon for your search, e.g Amazon UK instead of Amazon.com, esp. if your copy is from another country.

Look up your book on Amazon, and see if someone has listed your edition using an ASIN. Use that instead of the ISBN.