Convert Custom ArcMap .tbx to Pro 3 .atbx

[BartPittari]

I'm in the early stages of a migration project from ArcMap 10.8 to ArcPro 3.x.  Moving the .mxds are not an issue, but we have a few .tbx files that were created for some customized projects (use/call Python 2.7 scripts with the toolbox taking in parameters). 

I've used/am using the 2to3 conversion to migrate those scripts to Python 3.x, and was wondering if there was some way to programmatically convert the .tbx structure itself to an .atbx ... I thought ImportToolbox would be the way to go, but I may have been mistaken (got a 99998 error when I attempted).  If the Toolbox needs to be rebuilt, that's fine, but it looks like you can import from 2.x to 3.x so I figured there might be a way to migrate from 10.8 to 3?

[DanPatterson · Accepted solution]

I copied the tools from the *.tbx into a new *.atbx in Catalog (right-click copy, then past

You have to redefine the toolset names.

The procedure wasn't without the odd glitch but was easier than respecifying tool parameters.

[BartPittari]

Dan,

Yeah, that's what I kinda figured I was going to have to do, but was hoping that I could just write some quick code and, voila!, it's imported and I can go on to the other laundry list of things on this upgrade.

Appreciate it.  Thanks!