Preserve measure formatting during Excel export

We have a measure whose values represent minutes, meaning that 300 corresponds to 5:00 AM.

It is defined as a measure because it needs to be aggregated based on other members, and is therefore summarized using the minimum value.

Within TARGIT, we formatted the measure using time notation. However, this formatting is no longer preserved when exporting the report to Excel.

Display of formatted measure in TARGIT AnyWhere:
How this measure is represented in Excel export:

Our request is that measure formatting is preserved when exporting to Excel, meaning that the measure appears as text, e.g., “5:00.”