23.98 Timeline into 29.97

I have a 23.98 timeline with various clips that have been graded. I need to bring them into a 29.97 timeline with pulldown/80% speed change. It is fine if they are contained first. Is there a way to do this without exporting a 23.98 QT and then bringing it back into the 29.97 project?

From what I know Resolve doesn't properly add pulldown to clips timelines with mixed rate clips. So your best bet would be to render your 23.98 sequence to 29.97 w/3:2 and then bring that into your 29.97 seq.

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Is there a way to do this without exporting a 23.98 QT and then bringing it back into the 29.97 project?

Adding to what Nathan wrote. No. Currently there isn't another way to do this.
For best results, I'd recommend you look into hardware framerate conversions like BMD's Teranex.

If you make sure you don't apply any scaling, you can get a 1:1 pixel mapping of interlaced footage by setting Resolve to deinterlace your footage in the media pool, and then using a 59.94 progressive timeline. If you then import your film footage as 23.976 progressive and place it on your 59.94 timeline, you will get 3:2 pulldown. Exporting the progressive timeline as 29.97 interlaced will then "reinterlace" the timeline and, provided you didn't apply any scaling on the interlaced footage, the interpolated lines (from deinterlacing) will be removed on output. Note that your footage and output field parity (top field first or bottom field first) will need to match for this to work, and your cuts have to be on even frame numbers.

Is there a way to do this without exporting a 23.98 QT and then bringing it back into the 29.97 project?

Adding to what Nathan wrote. No. Currently there isn't another way to do this.
For best results, I'd recommend you look into hardware framerate conversions like BMD's Teranex.

Stay away from Teranex for fps conversion. It's about useless for this task.

Is there a way to do this without exporting a 23.98 QT and then bringing it back into the 29.97 project?

Adding to what Nathan wrote. No. Currently there isn't another way to do this.
For best results, I'd recommend you look into hardware framerate conversions like BMD's Teranex.

Stay away from Teranex for fps conversion. It's about useless for this task.

Why Andrew?

Because Teranex doesn't use motion adaptive engine for fps conversion. It uses blending mode, which is far from anything good.
I'm not even sure if it supports advanced pulldown methods, like one which converts eg. 25p to 59.94i.
It's not Alchemist or Tachyon for sure, which are key tools for fps conversion.
It does fairly good scaling, de-interlacing, aspect conversion, there is some de-noise etc, but for todays standards it's nothing special at all. All of this can be done (as well or better) in file based workflows.
Those "1089 conversions" is just a pr slogan which doesn't mean much.

I have a 23.98 timeline with various clips that have been graded. I need to bring them into a 29.97 timeline with pulldown/80% speed change. It is fine if they are contained first. Is there a way to do this without exporting a 23.98 QT and then bringing it back into the 29.97 project?

Brute force technique: render out the 23.98 material, then bring those flattened 23.98 files into a 29.97 project and play them back at 23.98 and render them back out again at 29.97 with 2:3 pull-down added. In theory, this could work.

Andrew above is correct in that Snell Alchemist is pretty much the best tool out there for converting clips from one frame-rate to the other.

Well it's now Alchemist XF, which was Snell, then S-A-M and now it's part of Grass Valley which is owned by BELDEN
Software version is better than old hardware box.