Preserving overflowing containers' scroll positions

I have a standard listing of audio recordings with different filters on the left which are grouped in overflowing containers; say something like this:

```html

/* contents */

```

Each time a checkbox is changed my backend performs a search and returns the whole #core container. This is because the filters are reactive, and indeed if you filter by a particular author, this might disable certain yeras, and vice versa (and it gets more complex with more filter categories, of course.)

I was expecting idiomorph to preserve the form's scroll position, but it doesn't. Any idea?

Thank you very much!