asterisk users - Apr 2019 - Asterisk13 - Dialplan reload does not take modification in account

Hi all,

I switched an old asterisk 1.8 to a new 13 version, stock version from 
Ubuntu 18.04 server.

I did some modification in dialplan but after a reload they are not 
taken in account :(, even after restarting asterisk.

I checked logs and found lots of

merging incls/swits/igpats from old(localEP) to new(localEP) context, 
registrar = pbx_lua

also lines ending with pbx_config.

What does this mean? Could be the source of my troubles ?

Thanks for any hint

Daniel