Need explanation of from-internal behaviour

Arch = x86_64
OS = CentOS-6.4 (freepbx)
Asterisk = 11.5.1
FreePBX = 2.11.0.11

When I run asterisk -rvvvvvvvvvvvvvv and I dial another extension then I see this trace:

Connected to Asterisk 11.5.1 currently running on voinet09 (pid = 23499) [2013-10-10 11:58:59] DEBUG[23524][C-00000000]: sip/sdp_crypto.c:285 sdp_crypto_process: Accepting crypto tag 1 [2013-10-10 11:58:59] DEBUG[23524][C-00000000]: sip/sdp_crypto.c:310 sdp_crypto_offer: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:RA83tUxZtU5hO/7dbTOxZ4fPH0YhG2x+zKxeDay0 [2013-10-10 11:58:59] WARNING[23524][C-00000000]: chan_sip.c:10097 process_sdp: Declining non-primary audio stream: audio 15148 RTP/AVP 9 0 8 99 108 18 101 [2013-10-10 11:58:59] WARNING[23524][C-00000000]: chan_sip.c:10097 process_sdp: Declining non-primary audio stream: audio 15148 RTP/AVP 9 0 8 99 108 18 101 [2013-10-10 11:58:59] WARNING[23556][C-00000000]: ccss.c:1000 ast_set_cc_callback_macro: Usage of cc_callback_macro is deprecated. Please use cc_callback_sub instead. [2013-10-10 11:58:59] WARNING[23556][C-00000000]: ccss.c:1000 ast_set_cc_callback_macro: Usage of cc_callback_macro is deprecated. Please use cc_callback_sub instead. [2013-10-10 11:58:59] WARNING[23556][C-00000000]: ccss.c:1000 ast_set_cc_callback_macro: Usage of cc_callback_macro is deprecated. Please use cc_callback_sub instead. [2013-10-10 11:58:59] WARNING[23556][C-00000000]: ccss.c:1000 ast_set_cc_callback_macro: Usage of cc_callback_macro is deprecated. Please use cc_callback_sub instead. [2013-10-10 11:59:00] DEBUG[23556][C-00000000]: sip/sdp_crypto.c:310 sdp_crypto_offer: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:Mr2SShbYENzdOBZQsc5yqOTmfeOPyTj7Zbe1mGCO voinet09*CLI> exit Asterisk cleanly ending (0). Executing last minute cleanups

I have a file called extensions_override_freepbx.conf and in it I have these lines:

. . . [from-internal] include => set-alert-if-local

[set-alert-if-local]
exten => _X.,1,Noop(CALLERID_ALL=${CALLERID(all)})
exten => _X.,n,Noop(CALLERID_ORG="${REALCALLERIDNUM}")
exten => _X.,n,Set(CallerIDNum=${CALLERID(num)})
. . .

Evidently when I dial another extension I do not go through the from-internal context otherwise I would see the variables being set in the trace. Why is the from-internal context not being used or, if it is, why am I not seeing any evidence of this in the call trace?

because you overrode from-intenal