Results are different in V1 and V2 when retrieving solved messages for a given subject

Hi,

we are transitioning from V1 to V2 for consuming messages based on a given query. we are seeing different results in V2 from that of V1. Can you please explain why?

use case: retrieving solved messages that match subject:"payment issues"

V1:

https://www.paypal-community.com/ppl/restapi/vc/categories/id/en/search/messages?q=subject:payment%20issues&page_size=10&restapi.response_style=view&restapi.response_format=json&solved=true

V2:

http://www.paypal-community.com/ppl/api/2.0/search?q=SELECT%20id,subject%20FROM%20messages%20WHERE%20category.id%20=%20%27EN%27%20AND%20subject%20MATCHES%20%27%5C%22Payment%20issues%5C%22%27%20AND%20depth=0%20AND%20conversation.solved=true%20LIMIT%2010

I appreciate response on this.

thanks

Sushma