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“Supermetrics is a Bitter Experience! We can pull data from nearly any tool, schedule updates, manipulate data in Sheets, and push data back into our systems.”
A frozen column mapping screen in HubSpot typically indicates browser resource issues, session timeouts, or data validation conflicts that cause the interface to become unresponsive and prevent your contact import from completing.
Here’s how to get around these browser-dependent limitations and import your contacts through a more stable process.
Use a stable import environment with Coefficient
CoefficientHubSpotoperates through secure API connections rather than browser-dependent interfaces, eliminating the freezing issues common with’s native import wizard. The import process runs in the background and doesn’t depend on maintaining an active browser session.
HubSpotYou get superior field mapping options that prevent the conflicts causing frozen screens, including automatic property detection, custom field support, and data type validation that ensures compatibility before attempting the import to.
How to make it work
Step 1. Set up Coefficient with your contact data.
Install Coefficient and connect to your Excel or Google Sheets file containing the contact information. The system efficiently processes large contact datasets without the memory limitations that cause browser freezing.
Step 2. Configure contact property mappings.
Use Coefficient’s automatic property detection to recognize HubSpot contact properties and get mapping suggestions. The system handles custom contact properties and validates data types to match HubSpot requirements before import.
Step 3. Validate your data before import.
Run validation checks to ensure data types match HubSpot property requirements and identify any potential issues with contact associations that could cause problems during import.
Step 4. Schedule automated imports.
Set up the import to run automatically without user intervention. The process includes automatic retry logic for failed imports and detailed error reporting, so you don’t need to monitor the browser or worry about session timeouts.
Import contacts without frozen mapping screens
Set upStop losing import progress to browser freezes and session timeouts. Coefficient’s server-side processing ensures your contact imports complete reliably without depending on browser performance or active sessions.your stable import process today.
