Global default for negative number format in Reports, or a way to bulk-update existing reports?

Summary:

Hi all,

We use Oracle EPM Cloud Planning [module-Financials] with the Reports module (Report Designer). We want negative values, mainly revenue, to display in one consistent style in reports (for example brackets and a specific color).

What we know:

• Application → Settings → Number Formatting sets the negative sign and color. We use that for forms, dashboards and Smart View sheets, and we need a different format in reports.
• In Report Designer, negative prefix/suffix and “negative in red” are cell/grid properties, set report by report. “Use default” only seems to cover the thousands and decimal separators.
• For Financial Reporting, the Default Formatting Preferences only apply to newly created reports, not existing ones.