IOAM M-Anycast was influencing SRv6 header earlier to direct the packets to M-Anycast server by selecting the first address of the receiving interface. This will no longer work with evolved SRv6.
With SRv6 evolved code, processing of packet received for local SRv6 segment IPv6 address need to be configured a unique Local SRv6 SID. This address cannot be configured on the interface.
One option is to accept SRv6 localsid address as an input in ioam M-Anycast tunnel selection configuration.