Hi SFH,
What type of hopping you used before the implementation of new frequency plan? Since you don’t have drops that means your MAIO planning is OK. The next thing you might have check is multiplexing scheme on Abis. What multiplexing scheme you are using? If it is static then move to 64 statistic an see what happens (I dodn’t know for NSN if it’s same like in ALU, but, you know what I mean).
Regards,
Rex