Again no signal of Radio Dialogue and Radio Imara/Impala on May 25

MADAGASCAR   Again no signal of Radio Dialogue and Radio Imara/Impala on May 25
Radio Dialogue, no signal from May 21:
1600-1700 on 12115 MDC 250 kW / 265 deg to ZWE  Daily English/Shona/Ndebele
Radio Imara, Radio Impala, no signal from May 18:
1802-1900 on 17540 MDC 250 kW / 310 deg to SoAf Mon/Wed/Fri K'rwanda/English/French
My last recordings of Radio Dialogue on May 20 and Radio Imara/Impala on May 15