My quest is, with this inc in tgt tq shouldn't there be a corresponding inc in the RTOW for Cat A ops?
As Troglodita has already answered you:
No.
The target torque is Bell’s poor man’s equivalent to a FLI (first limit indicator). Dependant on ambient conditions the first OEI limit the engine is expected to reach, whether engine torque, ITT or N1, is “translated” into a calculated torque value, so in case of an engine failure the pilot has only one power instrument to monitor at what will be a pretty busy time.
This target torque value represents the first
OEI 2˝ minute limit to be reached.
As Troglodita pointed out, the climb segment between 200 and 1000 ft AGL is the limiting segment in determining Cat A/PC1 RTOW, and this is flown/certificated at
OEI MCP (-3D engines) or
OEI 30 min. limits (-3DE and -3DF engines). So the target torque value has nothing to do with the power settings during the “weight limiting” segment of the Cat A profile.
Hope this answers your question adequately.