Good Morning Bette, 

Thank you for contacting the U of M Extension Service. 

Here is a link about Boston ivy from the Missouri Botanical Garden: https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c267

This information states: It should not be grown up wood or shingle walls because the holdfasts are difficult to remove, can creep under shingles and will ruin the paint. If unchecked, vines can also attach to and seriously damage such objects as gutters, shutters or wiring around home and buildings. It is easily propagated by cuttings.

I am not sure if the tendrils will sprout or not. I am not familiar with over wintering this plant. The above information indicates it is hardy to zone 4. It is still early in the spring. I would leave the tendrils on until you can determine if they will sprout or if the plant will sprout from the ground. Did you have any mulch or protection on the ground where the plants are planted? With little snow cover this last winter, the cold weather could be hard on the plants. 

Good Luck!

You are welcome!