Persist date selection in Multicalendar after saving

Currently, when dates are selected in the multicalendar and a change is saved, the dates are automatically deselected. This requires the user to re-select the same dates to make subsequent adjustments (e.g., setting different prices for weekdays vs. weekends), which is time-consuming.

The requested improvement is for the selected dates to remain highlighted/selected after clicking 'save' until the user manually clears them.