-Assyrian Worker and Christian monk missing civilopedia descriptions.
Tony thank you very much for reporting both errors and your input.

Indeed both units are missing their civilopedia entries. I will fix that.
-The base camel unit that is generated from the Desert Fort has a value of 30 shields. This makes upgrades fairly expensive. For example, the musket camel cost 90 gold. I'm not sure if this was done deliberately, as it contrasts with artillery, which hold steady at 60 shields over multiple iterations.
Yes, this is also true and fixed for the next version of CCM. In CCM 2.5 for some bankrupt civs sometimes the last defenders of cities even were "pure" camels.
Also, I'm not sure how the civil engineer is supposed to work. In the civilopedia it says that it is available with the tech that allows the transcontinental railroad, but in the biq it is available with Construction. I changed citizens to engineers but they seem to do nothing. I'm not sure what I am missing here.
Tony, the engineers in CCM 2.5 are working. The philosophy of CCM is, to put as much information as possible into the techtree (and the secondary information or information that is not suited for the techtree into the Ingame help). Therefore in the CCM-techtree the techs are connected by arrows and the techboxes in the techtree should hold as much information as possible. The player should be assisted as much as possible by planing the game in the techtree.
Now let´s have a look at the techtree of era 1 (on a not finished prototype of the next version of CCM as CCM 2.5 is no longer available on my pc):
The engineer is coming with tech Construction (as I have decided to set this specialist in an era where it is useful and not in an era where only few buildings and wonders are remaining to build in the game). Those specialists appear in the techbox with a yellow background.
When clicking into the techbox Construction, the following information is appearing:
There are two informations (marked in red colour) that with this tech engineers can be created (the labels text Units in CCM 2.6 is changed to Options)
Now, when clicking on the option Engineer, the following information can be seen:
Tony, please consider, that in your screenshot the city has only one shield of base construction, boosted by buildings to only two shields (!) and nevertheless the expensiv building Stock Exchange can be built in only 5 turns. The engineers do their best, but they cannot achieve a miracle.
Tony, thank you very much for your input. Where in the Ingame help have you seen, that the Engineer is allowed by tech Improved Steam Engines ?
For all who are not knowing it: The graphics of the CCM city screen in the screenshot above were created by AnthonyBoscia.
