Get-SPOWeb -Detail and Web.Update()

The following does not commit the update to the web:

``` powershell
$w = Get-SPOWeb -Detail
$w.Web.RequestAccessEmail = "help@org.com"
$w.Web.Update()
```

However, this works:

``` powershell
$w = Get-SPOWeb
$w.Web.RequestAccessEmail = "help@org.com"
$w.Web.Update()
```
