Total float values differs in Client and Web for a same project at WBS level

Hey everyone,

I've found this issue while working on with Client and P6 web. Rolled up value for a WBS shows exact total float in Client while in P6 Web, the rolled up value of total float differs. Is there any option available in web to see the same rolled up values as in Client.

This is P6 web and you can see Land is the WBS and there is one activity under it. Activity status is complete and total float is nil in activity level. But at the WBS level there is a float of 339 days.

Whereas same project in Client has total float nil in Activity and WBS level.