I am probably not the only person who had faced the following problem – if you are doing some major change, like renaming of a table or a class you are compiling the AOT to get all the places where references to renamed object should be changed. The problem is that the resulting error log can be easily lost, for example, by pressing reset or closing AX by accident. Unfortunately in this case it cannot be restored easily, only with yet another AOT compilation. To avoid recompilation I found out for myself great functionality that allows to export and import compiler error logs. It is accessible from the Compiler output window->Import/Export.
It is also interesting fact that AX uses html format to store error logs.