It's a bug, all right. But I thought it was related to
RoboSource Control. I'm glad (in a sorry way) that other people
have seen it, too.
We have had this problem in RHx5 and RH6, with RoboSource
Control 2 and 3. As far as we can tell, there is no consistent
cause - topics just lose their template connections. Yes, doing a
batch Properties change with OK will do it, but sometimes it just
happens.
It hasn't been a terrible burden, honestly. The hardest part
is figuring out which topics have lost their templates. There's an
option in the Topic Properties report to show the style sheet for
each topic, and if there is no template, there is no style sheet -
but with 2000+ topics in a project, that's not very workable.
And Harvey's right about the batch update in the Topics pod -
click Apply, then click the red x to close the window. RH7 may be
doing batch updates differently from RH6, but I say why take the
risk?
HTH,
Elisa