How to Ensure Generated Charts Inherit Template Visualization Styles?

I'm generating presentations from a template that has correctly styled bar charts (no grid lines, no axis labels). However, when new charts are generated, they don't inherit the template's chart styles - they render with default appearance instead. Data values (scores, labels, goals) populate correctly. Only the visual styling is lost. I've also tried prompting for the styles directly using natural language ("no grid lines"), property names (hasGridLines: false, hideCrossAxis: true), and structured XML specs - none affect the output. Is there a way to ensure generated charts inherit the template's visualisationConfig?