Change track without manual relaying

[nsm4771]

Is there a way I can change the red sandstone track on the midshire and rosworth layout to the TRS19 track used in Cornish railways without manually relaying it (same with ballast) I can't find the sandstone track kuid in the config file to change it when I press ctrl+F.
I changed the ballast texture kuid and when I loaded the route it hadn't changed.
TIA.

[Mightyena]

Use the bulk asset replace tool to update track type.

With the route open, click the "tools" menu (the spanner and screwdriver) > Bulk Asset Update/Replace

Next to "Assets to replace", click the picker icon, and then click on the track you want to replace

Go into the track laying menu and find the track you want to replace it with, and drag it from there into the "assets to replace with" box

Click "Begin"

[nsm4771]

Use the bulk asset replace tool to update track type.

With the route open, click the "tools" menu (the spanner and screwdriver) > Bulk Asset Update/Replace

Next to "Assets to replace", click the picker icon, and then click on the track you want to replace

Go into the track laying menu and find the track you want to replace it with, and drag it from there into the "assets to replace with" box

Click "Begin"

Superb!! Thank-you very much.