Hi Venu
Can confirm that currently you can create projects via several methods including Kingswaysoft.
The issue is that you can't create project tasks via import / kingswaysoft / API (i.e. msdyn_projecttasks)
We should be able to import times etc, it's more just the Project for Web area (aka Tasks) in Lite deployment that's difficult.
There are some actions on the scheduler API for CRUD of this area however at this time it seems the fields that we would want to update are not available for create / update. I am having a go with postman without success keep getting the message to perform action in the UI.
docs.microsoft.com/.../schedule-api-preview
So in short you can't update effort.
Also be aware that you can update via web api and it reflects on a project task view but not in the P4W tasks tab as we can see below I had changed "Task 8D 8E" to "Task 8D 8E Postman" and effort to 50.


Another key issue we are facing is the ability in P4W where you can select task/task's and set to 25, 50, 75, 100% where as in PO it appears that we need to create an approved time entry that covers the effort required. I'm looking at a flow or plugin to allow a boolean like switch on a task view that when tripped will get effort for task, create a time entry for that amount and submit and approve it to show Tasks as complete with the line through them. Changing the msdyn_progress aka % complete has no effect on P4W iframe tab.
Regards
Antony