Question: Numerical integration in M11 vs M10

I have a sheet in Maple 10 which I want to re-run in Maple 11. It contains a very lengthy (piecewise defined) function f(m) to be integrated over the Reals (numerical) and dito for exp(m)*f(m). The results are certainly ~ 1. In M10 this caused problems which can be overcome using method= _NCRule (I got the advice here ...) in both the cases, the result came up fast. In M11 I killed the execution, it needs to long. While integrating f(m) can be done by the NAG routines, that does not work for exp(m)*f(m). Certainly I could split up at the breaks for piecewise - but can somebody explain *why* it 'fails' now? And: no, I do not want to split up manually. Any way to get it quick (may be dirty, but reasonable - except cutting off) and fast? As the integrand is quite lengthy (9608 characters) I enclose it as a text file separately: lengthy_integrand.txt
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