Hello everyone !!
After updating Mikrotik from version 6 to version 7, BGP stopped converging with the provider. The provider uses ZEBRA as a router. On my side, the session is raised, networks from the provider arrive, the provider reports that our networks come to them without a prefix mask.
The problem occurred after upgrading from version 6 to 7.15.3
There are no problems with other providers, they use Juniper as a router.
In my output filters, networks are specified with a mask and the output networks are specified as an address list where my networks are also registered with a mask.
Mikrotik - CCR1016 7.15.3