Hi,
It is my guess that GUID part for namePropStr and href NameMapping parameters is not stable and changes its value for each test run.
What I would do is to locate some parent that contains the menu item that you need to use and then, search for menu item not from page, but from this parent.
Sample pseudocode:
var page = ... ;
var oneOffContainer = Aliases.browser.page.[...].oneOffContainer;
// or
// page.FindChild(...); // search criteria for One-Off menu container
oneOffContainer.Click();
var withdrawalItem = oneOffContainer.FindChild('contentText', 'Withdrawal', 50);
withdrawalItem.Click();
...
var regularContainer = Aliases.browser.page.[...].regularContainer;
// or
// page.FindChild(...); // search criteria for Regular menu container
regularContainer.Click();
var regularItem = regularContainer.FindChild('contentText', 'Withdrawal', 50);
regularItem.Click();