Updated some modules and i see the following warnings for extensions.conf

So, i do not edit extentions.conf but after a recent module update i see the following in the console

What can i do to remove the issues and of course stop getting these warnings given that FreePBX is creating the file automatically.

-- Registered extension context 'from-pstn-toheader'; registrar: pbx_config

[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of ‘.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 127 of extensions.conf
– Added extension '
.’ priority 1 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of '
.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 128 of extensions.conf
– Added extension '
.’ priority 2 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of ‘.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 129 of extensions.conf
– Added extension '
.’ priority 3 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of '
.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 130 of extensions.conf
– Added extension '
.’ priority 4 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of ‘.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 131 of extensions.conf
– Added extension '
.’ priority 5 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of '
.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 132 of extensions.conf
– Added extension '
.’ priority 6 to from-pstn-toheader
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of ‘.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 133 of extensions.conf
– Added extension '
.’ priority 7 to from-pstn-toheader
– Registered extension context ‘from-sip-external’; registrar: pbx_config
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of '
.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 146 of extensions.conf
– Added extension '
.’ priority 1 to from-sip-external
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of ‘.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘X.’ instead at line 147 of extensions.conf
– Added extension '
.’ priority 2 to from-sip-external
[2017-02-11 15:02:59] WARNING[18176]: pbx_config.c:1837 pbx_load_config: The use of '
.’ for an extension is strongly discoura
ged and can have unexpected behavior. Please use ‘_X.’ instead at line 148 of extensions.conf

These are just warnings telling you that, unless you know exactly what you are doing, entries with “_” at the beginning can cause unpredictable and troublingly hard to fine errors. Since these are part of the FreePBX context set generated for you, you can successfully ignore these warnings.