Is it safe to say that it's probably a good idea not to use the Text Frame Chaining tool if you don't need to?

I'm putting together a large ebook composed of a lot of separate "Units". (it's a software tutorial manual)
I am creating the Units as individual .sla files- and then going to bring them all together (Import) into a Master Document.
When I have tried importing a .sla file that has linked text frames- some of the text flow worked and the rest didn't - seem to be where the chain was between pages.
When I bring in a .sla file with no linking- all frames (text and images) come in just fine.
I think (to be on the safe side) I'll just stay well away from chaining the frames?

Many thanks