About the first part. It is healthy for a server to change maps, at the most an hour apart of each change. If anything it would have to be re done for that particular occurrence. It does make sense, do you think of changing the stay time to half hour or so?
The second part, I get what your sayin. That most likely is a data error in the .dat file. Id have to look up that reasoning. I have kinda let go of this project, even tho its mainly a community additive plugin. But I'll see.