Page breaks do not work for bursting (RTF template -> Excel output)

Hello colleagues.

Version:

BIP 11.1.1.7

Data structure:

<DS>

<G1>

  ...

</G1>

<G2>

  ...

</G2>

<G3>

  ...

</G3>

</DS>

Problem.

Report has RTF template and it is exported to XLSX format only. Resulted Excel has 3 separated sheets (from functional logic one Excel file contains 3 reports are spaced to sheets). But page breaks (we use them into RTF template for create multisheets in Excel) are ignored if we configure bursting to report - all 3 parts are shown in the first sheet. Could you please suggest how to avoid this problem.

Thank you in advance.