I cannot seem to get the Search/Replace functionality to use back-references with Regular Expressions in 4.0. This worked fine in 3.0.
Text in my editor:
abc
Example:
Find: (a)(bc)
Replace:
\1\1\1\2
Should result in:
aaabc
Instead I get:
\1\1\1\2
This still isn't fixed in 4.0.2 - I'll try to find time to put in MOS as a bug...