Link Expense Budget Dates to Project / Task Dates
If the Link Expense Budget Dates to Project / Task Dates option is checked, the dates associated with this expense entry will be derived from the project (or task) dates (depending on whether the project is configured to manage assignments and expense budgets at the project or task level for this project) and cannot be directly entered on an Expense Budget entry.
When this option is used, each expense type/description combination can have one and only one expense budget entry for a given project/task. As such, when setting this option, if multiple expense budget entries previously existed, they will all be removed and replaced with a single entry.
As the related project/task dates are modified, all Expense Budget entries having linked dates will also have their dates modified to reflect the new project/task dates.
Note that this may be particularly useful when used in conjunction with Task Dependencies feature, such that moving a task date will not only recalculate dependent task dates but also any linked Expense Budget dates.