Your script does not link the new record in the portal table to the current record in your layout's table.
Start your script with:
Set Variable [$InspectionID ; value: Daily Inspections::YourTablesPrimaryKeyHere ]
Then change layouts and create the new record.
Then add this step to link the new record back to your original record on your "Daily Inspection IPAD" layout:
Set Field [Join_Daily_Scissor_Lift::YourTablesForeignKeyHere ; $InspectionID ]
Note: When Setting up Set Field, there are two Specify buttons that must be clicked. To get Set Field [Table::Field ; Expression], add set field to your script and click the first button (specify target field). Select Table::Field from the list of fields. Do not click the specify button next to the repetition box. Click OK to close this dialog box. Now click the lower specify button (calculated result) and create the expression to the right of the semicolon (;). Do not try to type in the semicolon.
Worked like a charm